This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
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-
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The hole in the lid shall be able accommodate the Ultrasonic sensor.
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-
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-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
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Stage 2 - PCB Assembly
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-
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Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
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To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
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-
-
-
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The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
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While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
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Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
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Turn the PCB around and make sure the switch is turned off.
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Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
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Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
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Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers like shown in the below figure.
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Insert these male headers into female headers and place the MCU’s first eight pins, both sides, on top of these male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
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With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
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Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
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Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
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Stage 3 - Battery Assembly
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Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
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Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
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Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
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Evaluation 1 - Main voltage check
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Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
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Turn off the switch before proceeding to next steps - figure 16.
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Stage 5 - Ultrasonic Sensor Assembly
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Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
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Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
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Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
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Stage 6 - PCB Mounting
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Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
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Insert the MCU back into the header pins
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Stage 7 - Solar Panel Assembly
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Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
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Prepare the ends by tinning them like shown in the figure 26.
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Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
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Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
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Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
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Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
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Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
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Evaluation 2 - Solar Panel Operation
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Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
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Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
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Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
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Stage 8 - Antenna Assembly
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Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
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Secure it using a screw from the outside like shown in figure 36
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Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
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Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
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Evaluation 3 - Sensor Operation
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Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
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Final steps
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Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
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Now secure the lid with screws {figure 41}
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The sensor shall feel robust and when invereted there shall be no moving parts.
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Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
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Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
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-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/03/fec22cb1bb3e4e19119e6ae33041e9e985e4ab7e292345c5e58e39b234d15a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/03/fec22cb1bb3e4e19119e6ae33041e9e985e4ab7e292345c5e58e39b234d15a
deleted file mode 100644
index 1c7c64b..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/03/fec22cb1bb3e4e19119e6ae33041e9e985e4ab7e292345c5e58e39b234d15a
+++ /dev/null
@@ -1,216 +0,0 @@
-I"x0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
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-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
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-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
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-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
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Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
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Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
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Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
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Stage 3 - MCU Assembly
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Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
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Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
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Mount the MCU male headers into female headers like shown in the figure 10 below.
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Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
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With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
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Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
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Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
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Stage 3 - Battery Assembly
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Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
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Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
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-
-
Evaluation 1 - Main voltage check
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-
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Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
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Turn off the switch before proceeding to next steps - figure 16.
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Stage 5 - Ultrasonic Sensor Assembly
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Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
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Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
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Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
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Stage 6 - PCB Mounting
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Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
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Insert the MCU back into the header pins
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Stage 7 - Solar Panel Assembly
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Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
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Prepare the ends by tinning them like shown in the figure 26.
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Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
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Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
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Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
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Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
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Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
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-
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Evaluation 2 - Solar Panel Operation
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Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
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Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
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-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
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Stage 8 - Antenna Assembly
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Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
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Secure it using a screw from the outside like shown in figure 36
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Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
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Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
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-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
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-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
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-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
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Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/04/63dd85f7eefb0f443b6f68d7654cdb8f3677b3a7fde60124977a0a570e0a77 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/04/63dd85f7eefb0f443b6f68d7654cdb8f3677b3a7fde60124977a0a570e0a77
deleted file mode 100644
index c52ec37..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/04/63dd85f7eefb0f443b6f68d7654cdb8f3677b3a7fde60124977a0a570e0a77
+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ä8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
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-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
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Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
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With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
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Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
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Stage 4 - Battery Assembly
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With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
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Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
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Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
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Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
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-
-
-
-
-
Evaluation 1 - Main voltage check
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-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
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Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
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Stage 5 - Ultrasonic Sensor Assembly
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Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
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Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
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Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
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Connect V+ of ultrasonic sensor to the VE of PCB.
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Connect GND of ultrasonic sensor to the G of PCB.
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Connect pin 4 of ultrasonic sensor to the G5 of PCB.
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Connect pin 5 of ultrasonic sensor to the RX of PCB.
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Stage 6 - PCB Mounting
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Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
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Insert the MCU back into the header pins
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-
Stage 7 - Solar Panel Assembly
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-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
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-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
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-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
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-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
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-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
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-
-
Evaluation 2 - Solar Panel Operation
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-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
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-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
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-
-
Stage 8 - Antenna Assembly
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-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/06/60d19bdb9b10846ade15f454a0dbf2ccc064efa750ce3a8c94e35fe48ac8d8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/06/60d19bdb9b10846ade15f454a0dbf2ccc064efa750ce3a8c94e35fe48ac8d8
deleted file mode 100644
index 9825c13..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/06/60d19bdb9b10846ade15f454a0dbf2ccc064efa750ce3a8c94e35fe48ac8d8
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ć0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8f/2875103ae3f416b4e7220e85db84cbd026c052a09007e0f50d498562ce6c30 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/08/c35b18f0186c2f5cdf8f41cef8537864f6bdf1886b938e20653998725bc70e
similarity index 97%
rename from .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8f/2875103ae3f416b4e7220e85db84cbd026c052a09007e0f50d498562ce6c30
rename to .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/08/c35b18f0186c2f5cdf8f41cef8537864f6bdf1886b938e20653998725bc70e
index 7236552..218e486 100644
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8f/2875103ae3f416b4e7220e85db84cbd026c052a09007e0f50d498562ce6c30
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/08/c35b18f0186c2f5cdf8f41cef8537864f6bdf1886b938e20653998725bc70e
@@ -1,4 +1,4 @@
-I"Ä8
Quality Assurance Procedure (QAP)
+I"›9
Quality Assurance Procedure (QAP)
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
@@ -234,6 +234,8 @@
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
@@ -249,7 +251,10 @@
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
Solder the panel and seal the panel using the gasket.
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
Seal the panel using the gasket.
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/0e/07d3a08c63dde649c19852edfadde365cd03684109e4589241bbb8abdb6bd0 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/0e/07d3a08c63dde649c19852edfadde365cd03684109e4589241bbb8abdb6bd0
new file mode 100644
index 0000000..647241b
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/0e/07d3a08c63dde649c19852edfadde365cd03684109e4589241bbb8abdb6bd0
@@ -0,0 +1,314 @@
+I"Ç;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
+
Now secure the lid with screws
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/0e/52360a4bb8acfaacffb9d50b478f938adb79c63ff03bc540e3808d3b53bd53 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/0e/52360a4bb8acfaacffb9d50b478f938adb79c63ff03bc540e3808d3b53bd53
deleted file mode 100644
index 775ce1d..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/0e/52360a4bb8acfaacffb9d50b478f938adb79c63ff03bc540e3808d3b53bd53
+++ /dev/null
@@ -1,218 +0,0 @@
-I"1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/10/671cd7fef3f1479ad7857e8327a52bce9b87249814410940e9d34836499199 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/10/671cd7fef3f1479ad7857e8327a52bce9b87249814410940e9d34836499199
deleted file mode 100644
index 4f7817c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/10/671cd7fef3f1479ad7857e8327a52bce9b87249814410940e9d34836499199
+++ /dev/null
@@ -1,225 +0,0 @@
-I"ű1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/13/896f209007dca0f8ee60f2ee453dac12fda64f78d517bcef122b84711e78a4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/13/896f209007dca0f8ee60f2ee453dac12fda64f78d517bcef122b84711e78a4
deleted file mode 100644
index ce6203a..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/13/896f209007dca0f8ee60f2ee453dac12fda64f78d517bcef122b84711e78a4
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ŕ0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/14/f52d49e4ec4b3ac989468b627df2f54e87116d592cb8d7f9d2e4772701dbc3 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/14/f52d49e4ec4b3ac989468b627df2f54e87116d592cb8d7f9d2e4772701dbc3
deleted file mode 100644
index 516d339..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/14/f52d49e4ec4b3ac989468b627df2f54e87116d592cb8d7f9d2e4772701dbc3
+++ /dev/null
@@ -1,299 +0,0 @@
-I"E<
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
Solder the panel and seal the panel using the gasket.
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown.
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown in figure 29. Leave enough space to solder the solar panel.
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/15/10badcc79ad2e17ce757a779dd55776df4f0c22a07cdbf4400f0f54b51744a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/15/10badcc79ad2e17ce757a779dd55776df4f0c22a07cdbf4400f0f54b51744a
deleted file mode 100644
index 4abca80..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/15/10badcc79ad2e17ce757a779dd55776df4f0c22a07cdbf4400f0f54b51744a
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ľ0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/15/a91c808f41d3d00aba24ce9529ee9fe8224804ca80b0df4de4a3749a8fc6da b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/15/a91c808f41d3d00aba24ce9529ee9fe8224804ca80b0df4de4a3749a8fc6da
deleted file mode 100644
index dfbcd6a..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/15/a91c808f41d3d00aba24ce9529ee9fe8224804ca80b0df4de4a3749a8fc6da
+++ /dev/null
@@ -1,308 +0,0 @@
-I"<
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1a/ef1a4471e14d3fe33a9ddacc182928a25bff3e36411a33b63871476a1c42e8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1a/ef1a4471e14d3fe33a9ddacc182928a25bff3e36411a33b63871476a1c42e8
deleted file mode 100644
index 36263c7..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1a/ef1a4471e14d3fe33a9ddacc182928a25bff3e36411a33b63871476a1c42e8
+++ /dev/null
@@ -1,225 +0,0 @@
-I"ű1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1f/c872471dabf4b1fe8595ee7b087122263b12b803ef94e8a6af948bf69d5ea2 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1f/c872471dabf4b1fe8595ee7b087122263b12b803ef94e8a6af948bf69d5ea2
deleted file mode 100644
index cd463fa..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1f/c872471dabf4b1fe8595ee7b087122263b12b803ef94e8a6af948bf69d5ea2
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ť3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers like shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1f/e7d1d4b7636922826db2a6b4a5def972fa9dfe2bf88b558b0d4916a56d397c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1f/e7d1d4b7636922826db2a6b4a5def972fa9dfe2bf88b558b0d4916a56d397c
new file mode 100644
index 0000000..4a48187
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/1f/e7d1d4b7636922826db2a6b4a5def972fa9dfe2bf88b558b0d4916a56d397c
@@ -0,0 +1,320 @@
+I"÷;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/21/1ef7a52aa1089c72cc9ac2f784ff801da39661e9e84bf89cbc590a1938afc4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/21/1ef7a52aa1089c72cc9ac2f784ff801da39661e9e84bf89cbc590a1938afc4
deleted file mode 100644
index 46b4bcd..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/21/1ef7a52aa1089c72cc9ac2f784ff801da39661e9e84bf89cbc590a1938afc4
+++ /dev/null
@@ -1,248 +0,0 @@
-I"—3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers like shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/22/25db4cd8f5d9b6ea1b3596341fc38282582cf25de19dce62a02be9cd3fbb2b b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/22/25db4cd8f5d9b6ea1b3596341fc38282582cf25de19dce62a02be9cd3fbb2b
deleted file mode 100644
index a02be36..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/22/25db4cd8f5d9b6ea1b3596341fc38282582cf25de19dce62a02be9cd3fbb2b
+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ĺ8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/22/ac7a5f80cc34d9fadf7961c3c746de41e4bafc395150ab7a23e88b637b37ae b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/22/ac7a5f80cc34d9fadf7961c3c746de41e4bafc395150ab7a23e88b637b37ae
deleted file mode 100644
index bc851a8..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/22/ac7a5f80cc34d9fadf7961c3c746de41e4bafc395150ab7a23e88b637b37ae
+++ /dev/null
@@ -1,243 +0,0 @@
-I"3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
-
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
-
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/23/4d27536609b8484508fa1cd29dfb99f4e2a8ee1c6c7d4984e8ba77bca7b4a4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/23/4d27536609b8484508fa1cd29dfb99f4e2a8ee1c6c7d4984e8ba77bca7b4a4
deleted file mode 100644
index 91013e7..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/23/4d27536609b8484508fa1cd29dfb99f4e2a8ee1c6c7d4984e8ba77bca7b4a4
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ż3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/23/54e18b37cc839d03b405ad61e3142196908a6ee5a4a88ca820a9b6ed262479 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/23/54e18b37cc839d03b405ad61e3142196908a6ee5a4a88ca820a9b6ed262479
deleted file mode 100644
index 65ad54c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/23/54e18b37cc839d03b405ad61e3142196908a6ee5a4a88ca820a9b6ed262479
+++ /dev/null
@@ -1,216 +0,0 @@
-I"x0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/25/37b44227f8fef44271b71a1b219202ac7d02a6e34276109621c48aec44d9b0 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/25/37b44227f8fef44271b71a1b219202ac7d02a6e34276109621c48aec44d9b0
deleted file mode 100644
index 5eee4f3..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/25/37b44227f8fef44271b71a1b219202ac7d02a6e34276109621c48aec44d9b0
+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ĺ8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/26/1ed2f94b79d7e75e8a5e4b9a6cd1da42ac822c12daa0d85795017f8f252820 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/26/1ed2f94b79d7e75e8a5e4b9a6cd1da42ac822c12daa0d85795017f8f252820
deleted file mode 100644
index dd7cb8c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/26/1ed2f94b79d7e75e8a5e4b9a6cd1da42ac822c12daa0d85795017f8f252820
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ż3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/26/3914fb28a148cff436b98df2cc2b0e7e9401be7e3098379ac58c783038c0ae b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/26/3914fb28a148cff436b98df2cc2b0e7e9401be7e3098379ac58c783038c0ae
deleted file mode 100644
index 63e70f8..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/26/3914fb28a148cff436b98df2cc2b0e7e9401be7e3098379ac58c783038c0ae
+++ /dev/null
@@ -1,223 +0,0 @@
-I"S2
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2a/0dcf3d00f3b5d426af4ed954c7600b2d85bb26bb518698c629c4dcde58904d b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2a/0dcf3d00f3b5d426af4ed954c7600b2d85bb26bb518698c629c4dcde58904d
deleted file mode 100644
index 96567bf..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2a/0dcf3d00f3b5d426af4ed954c7600b2d85bb26bb518698c629c4dcde58904d
+++ /dev/null
@@ -1,256 +0,0 @@
-I"ý4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2a/43883b92acdd3b4d28594f7fe385a1761d7726341fc23bded55e12f4a1b591 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2a/43883b92acdd3b4d28594f7fe385a1761d7726341fc23bded55e12f4a1b591
deleted file mode 100644
index bd611ff..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2a/43883b92acdd3b4d28594f7fe385a1761d7726341fc23bded55e12f4a1b591
+++ /dev/null
@@ -1,216 +0,0 @@
-I"x0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2b/f5979910c6411ad98565ab94a1259e122317292b3eb4ed0dcbafc5825c1956 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2b/f5979910c6411ad98565ab94a1259e122317292b3eb4ed0dcbafc5825c1956
deleted file mode 100644
index 4413007..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2b/f5979910c6411ad98565ab94a1259e122317292b3eb4ed0dcbafc5825c1956
+++ /dev/null
@@ -1,273 +0,0 @@
-I"ş6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2c/47487c3c3719c1a6da404687dc5b55fe0a898ba66b06fd84dc7e09a4eb932c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2c/47487c3c3719c1a6da404687dc5b55fe0a898ba66b06fd84dc7e09a4eb932c
deleted file mode 100644
index 94f4ea7..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2c/47487c3c3719c1a6da404687dc5b55fe0a898ba66b06fd84dc7e09a4eb932c
+++ /dev/null
@@ -1,276 +0,0 @@
-I"77
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown below.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2d/b1697d448b1ed84e2f8855f87985e1a91bd4904d774656249469f2889d197d b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2d/b1697d448b1ed84e2f8855f87985e1a91bd4904d774656249469f2889d197d
deleted file mode 100644
index bc8d7d5..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2d/b1697d448b1ed84e2f8855f87985e1a91bd4904d774656249469f2889d197d
+++ /dev/null
@@ -1,306 +0,0 @@
-I"R;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/60/1eb25205fdbde6d805492d05c9d6c6ce1284a6463446530f1b7d84cd01664e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2e/3daf438f2e283ccb048b44d3ed8b95b4bacb69704cca6617f25f76f079e953
similarity index 95%
rename from .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/60/1eb25205fdbde6d805492d05c9d6c6ce1284a6463446530f1b7d84cd01664e
rename to .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2e/3daf438f2e283ccb048b44d3ed8b95b4bacb69704cca6617f25f76f079e953
index 3c68cd3..cf275f9 100644
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/60/1eb25205fdbde6d805492d05c9d6c6ce1284a6463446530f1b7d84cd01664e
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2e/3daf438f2e283ccb048b44d3ed8b95b4bacb69704cca6617f25f76f079e953
@@ -1,4 +1,4 @@
-I")9
Quality Assurance Procedure (QAP)
+I"%:
Quality Assurance Procedure (QAP)
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
@@ -234,6 +234,8 @@
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
@@ -244,12 +246,17 @@
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
Solder the panel and seal the panel using the gasket.
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
Seal the panel using the gasket.
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
@@ -272,14 +279,14 @@
Evaluation 3 - Sensor Operation
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
Final steps
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
Now secure the lid with screws {figure 41}
@@ -287,8 +294,9 @@
The sensor shall feel robust and when invereted there shall be no moving parts.
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
References
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2f/7a1b7fd411f9b65783e5c997586ee01583d9b369dbe90fb82d1e94196e4a4c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2f/7a1b7fd411f9b65783e5c997586ee01583d9b369dbe90fb82d1e94196e4a4c
new file mode 100644
index 0000000..ee1562d
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/2f/7a1b7fd411f9b65783e5c997586ee01583d9b369dbe90fb82d1e94196e4a4c
@@ -0,0 +1,322 @@
+I"<
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/30/30111d7820ed12003638918563ce7a67a5a0fd0f6a07957f94233d37669ee9 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/30/30111d7820ed12003638918563ce7a67a5a0fd0f6a07957f94233d37669ee9
deleted file mode 100644
index 1f89e7e..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/30/30111d7820ed12003638918563ce7a67a5a0fd0f6a07957f94233d37669ee9
+++ /dev/null
@@ -1,258 +0,0 @@
-I"÷5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4..
-
Carefully without applying too much pressure on the solder joints, hold the wires little further away from the sensor and twist them like shown.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/32/9c02d4e2744cacce3404dfa81c77e553dfa2e8ee8645133bac832f8e5ce8be b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/32/9c02d4e2744cacce3404dfa81c77e553dfa2e8ee8645133bac832f8e5ce8be
deleted file mode 100644
index fa5aa8e..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/32/9c02d4e2744cacce3404dfa81c77e553dfa2e8ee8645133bac832f8e5ce8be
+++ /dev/null
@@ -1,290 +0,0 @@
-I"):
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/34/f6485a099a53aa3a326bdc337ec6d620ddb9a49c35686a7784a612cab6275f b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/34/f6485a099a53aa3a326bdc337ec6d620ddb9a49c35686a7784a612cab6275f
deleted file mode 100644
index 3b85aa1..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/34/f6485a099a53aa3a326bdc337ec6d620ddb9a49c35686a7784a612cab6275f
+++ /dev/null
@@ -1,252 +0,0 @@
-I"H4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/37/19c9aa1ed6bdf6d56054712e4e5697c89a7ad4f70682894e555c96f3b84e3a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/37/19c9aa1ed6bdf6d56054712e4e5697c89a7ad4f70682894e555c96f3b84e3a
deleted file mode 100644
index 6bfec0e..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/37/19c9aa1ed6bdf6d56054712e4e5697c89a7ad4f70682894e555c96f3b84e3a
+++ /dev/null
@@ -1,248 +0,0 @@
-I"Ć3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/37/b5796b2cea3e88f25f4ae000aebfc8c90ff2a0c82442a81ac3726d2cfd76b2 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/37/b5796b2cea3e88f25f4ae000aebfc8c90ff2a0c82442a81ac3726d2cfd76b2
deleted file mode 100644
index 82c5de1..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/37/b5796b2cea3e88f25f4ae000aebfc8c90ff2a0c82442a81ac3726d2cfd76b2
+++ /dev/null
@@ -1,305 +0,0 @@
-I"Ě;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3D-mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3c/6f2a48eba00dba36bd8579dfadabfd6d9b43c486e808cbfe6929a2575d26f4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3c/6f2a48eba00dba36bd8579dfadabfd6d9b43c486e808cbfe6929a2575d26f4
deleted file mode 100644
index e9e25d4..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3c/6f2a48eba00dba36bd8579dfadabfd6d9b43c486e808cbfe6929a2575d26f4
+++ /dev/null
@@ -1,269 +0,0 @@
-I"R6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3c/8376c7ebf6a20a298986c5bc76c4b7a6484003918094030fdff232f0c44850 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3c/8376c7ebf6a20a298986c5bc76c4b7a6484003918094030fdff232f0c44850
deleted file mode 100644
index 726ff56..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3c/8376c7ebf6a20a298986c5bc76c4b7a6484003918094030fdff232f0c44850
+++ /dev/null
@@ -1,308 +0,0 @@
-I"Ş;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3d/357fbf80f1e56d51dcdd7a6bfaa14b6c8dac490aa168277eff7b97ef1982db b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3d/357fbf80f1e56d51dcdd7a6bfaa14b6c8dac490aa168277eff7b97ef1982db
deleted file mode 100644
index 2eade44..0000000
Binary files a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3d/357fbf80f1e56d51dcdd7a6bfaa14b6c8dac490aa168277eff7b97ef1982db and /dev/null differ
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3d/93d8cfa93eea91f81c6aeed2ab16a466e5f8c6d46b7dcf30c2c4973467353f b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3d/93d8cfa93eea91f81c6aeed2ab16a466e5f8c6d46b7dcf30c2c4973467353f
deleted file mode 100644
index fa6fae3..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/3d/93d8cfa93eea91f81c6aeed2ab16a466e5f8c6d46b7dcf30c2c4973467353f
+++ /dev/null
@@ -1,219 +0,0 @@
-I"ü0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/40/76a79bb872b2baf93e34573406d81f44b3affbaa0245e3a1314ce95a6d3e02 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/40/76a79bb872b2baf93e34573406d81f44b3affbaa0245e3a1314ce95a6d3e02
deleted file mode 100644
index 4f713c3..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/40/76a79bb872b2baf93e34573406d81f44b3affbaa0245e3a1314ce95a6d3e02
+++ /dev/null
@@ -1,252 +0,0 @@
-I"«3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers like shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/41/99bd7bb9bfceec644c2b89a3f72bcb2ad8a5e2e1ab68d6324ad52362052edb b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/41/99bd7bb9bfceec644c2b89a3f72bcb2ad8a5e2e1ab68d6324ad52362052edb
deleted file mode 100644
index 0c3de55..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/41/99bd7bb9bfceec644c2b89a3f72bcb2ad8a5e2e1ab68d6324ad52362052edb
+++ /dev/null
@@ -1,276 +0,0 @@
-I"b7
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/43/46524cbde0ba3b7a6ab758813a2ff0690edad24ea2ddf82f8731acb555dbdd b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/43/46524cbde0ba3b7a6ab758813a2ff0690edad24ea2ddf82f8731acb555dbdd
deleted file mode 100644
index 5d51286..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/43/46524cbde0ba3b7a6ab758813a2ff0690edad24ea2ddf82f8731acb555dbdd
+++ /dev/null
@@ -1,306 +0,0 @@
-I"‡;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/46/60bceecea77ff6649153d1ac62f52633cc2d94f1a5478d615d2928590c4ded b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/46/60bceecea77ff6649153d1ac62f52633cc2d94f1a5478d615d2928590c4ded
deleted file mode 100644
index 344708a..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/46/60bceecea77ff6649153d1ac62f52633cc2d94f1a5478d615d2928590c4ded
+++ /dev/null
@@ -1,299 +0,0 @@
-I">:
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
Insert the MCU back into the header pins
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/47/65dfbe76f2023b1a5046bc6b62f0a4cb4d035df4e02d1382438e5e1f8fc8d4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/47/65dfbe76f2023b1a5046bc6b62f0a4cb4d035df4e02d1382438e5e1f8fc8d4
deleted file mode 100644
index 64c1ddc..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/47/65dfbe76f2023b1a5046bc6b62f0a4cb4d035df4e02d1382438e5e1f8fc8d4
+++ /dev/null
@@ -1,223 +0,0 @@
-I"ř1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/47/f64fd595a353457a2f5c4640a22894306ae3cebaa98b4290a699cf42210637 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/47/f64fd595a353457a2f5c4640a22894306ae3cebaa98b4290a699cf42210637
deleted file mode 100644
index e0a70c4..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/47/f64fd595a353457a2f5c4640a22894306ae3cebaa98b4290a699cf42210637
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ľ0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/48/d7094675511b14389773c2aad3cd0926102d8bd722f8a2ae11da0737873c1e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/48/d7094675511b14389773c2aad3cd0926102d8bd722f8a2ae11da0737873c1e
deleted file mode 100644
index ab27681..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/48/d7094675511b14389773c2aad3cd0926102d8bd722f8a2ae11da0737873c1e
+++ /dev/null
@@ -1,248 +0,0 @@
-I"š3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4a/5f6e7a3c4d183d28c7c87f272fd45db09e83ab4a5ad26c041f50241e544d32 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4a/5f6e7a3c4d183d28c7c87f272fd45db09e83ab4a5ad26c041f50241e544d32
deleted file mode 100644
index cb6ca5e..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4a/5f6e7a3c4d183d28c7c87f272fd45db09e83ab4a5ad26c041f50241e544d32
+++ /dev/null
@@ -1,305 +0,0 @@
-I"Ě;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/36e13a5323cbeb83d516ebad445898c398b32312049f56d7136aebcac6fe3c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/36e13a5323cbeb83d516ebad445898c398b32312049f56d7136aebcac6fe3c
deleted file mode 100644
index 8efa80c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/36e13a5323cbeb83d516ebad445898c398b32312049f56d7136aebcac6fe3c
+++ /dev/null
@@ -1,235 +0,0 @@
-I"Ŕ2
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/39e1aed28f049a6516ddd7309d896f8c7e51dcbf4261fc0f2f798ca376069a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/39e1aed28f049a6516ddd7309d896f8c7e51dcbf4261fc0f2f798ca376069a
deleted file mode 100644
index 42edc6c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/39e1aed28f049a6516ddd7309d896f8c7e51dcbf4261fc0f2f798ca376069a
+++ /dev/null
@@ -1,305 +0,0 @@
-I"Ý;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/9bfd171da62110458b896c7462de493fd357af349aa222b320804b16427fb7 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/9bfd171da62110458b896c7462de493fd357af349aa222b320804b16427fb7
deleted file mode 100644
index 960e334..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4b/9bfd171da62110458b896c7462de493fd357af349aa222b320804b16427fb7
+++ /dev/null
@@ -1,258 +0,0 @@
-I"“5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4..
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/79/9af7769a8d87450d99c3138bfa8df4071c64abdc742fbabc68cb8d454be439 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4f/dc0e6f536bb7a19dfcc732d89452d8163d878127a5ece35316e01eeb92cbf5
similarity index 94%
rename from .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/79/9af7769a8d87450d99c3138bfa8df4071c64abdc742fbabc68cb8d454be439
rename to .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4f/dc0e6f536bb7a19dfcc732d89452d8163d878127a5ece35316e01eeb92cbf5
index 870f6cc..39405c3 100644
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/79/9af7769a8d87450d99c3138bfa8df4071c64abdc742fbabc68cb8d454be439
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/4f/dc0e6f536bb7a19dfcc732d89452d8163d878127a5ece35316e01eeb92cbf5
@@ -1,4 +1,4 @@
-I"(9
Quality Assurance Procedure (QAP)
+I"I:
Quality Assurance Procedure (QAP)
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
@@ -233,7 +233,9 @@
-
Screw in a male LoRa antenna (should support 915MHz) onto the SMA female connector.
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
@@ -244,12 +246,19 @@
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
-
Solder the panel and seal the panel using the gasket.
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
Seal the panel using the gasket.
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
@@ -272,14 +281,14 @@
Evaluation 3 - Sensor Operation
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
Final steps
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
Now secure the lid with screws {figure 41}
@@ -287,8 +296,9 @@
The sensor shall feel robust and when invereted there shall be no moving parts.
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/51/e1512c273952c1753699166bce051e821a0d8b3ac293d2621f13bc5075c096 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/51/e1512c273952c1753699166bce051e821a0d8b3ac293d2621f13bc5075c096
deleted file mode 100644
index f2d4153..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/51/e1512c273952c1753699166bce051e821a0d8b3ac293d2621f13bc5075c096
+++ /dev/null
@@ -1,247 +0,0 @@
-I"T3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/52/22ef6c8a9f32058ff1459abd01780d01535e0dc052653f254592b5cec1034a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/52/22ef6c8a9f32058ff1459abd01780d01535e0dc052653f254592b5cec1034a
deleted file mode 100644
index 14310e4..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/52/22ef6c8a9f32058ff1459abd01780d01535e0dc052653f254592b5cec1034a
+++ /dev/null
@@ -1,307 +0,0 @@
-I"“;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/52/7dc6651fc26db9327890131b48a0fc90f371f005522124acd0b713a60b58bd b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/52/7dc6651fc26db9327890131b48a0fc90f371f005522124acd0b713a60b58bd
deleted file mode 100644
index 63a9fac..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/52/7dc6651fc26db9327890131b48a0fc90f371f005522124acd0b713a60b58bd
+++ /dev/null
@@ -1,285 +0,0 @@
-I"n8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/55/d6a6329bf2b234ac8b2f39fe3bb76932fd37bb281eb674fdea7d18991a160e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/55/d6a6329bf2b234ac8b2f39fe3bb76932fd37bb281eb674fdea7d18991a160e
deleted file mode 100644
index 59196b1..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/55/d6a6329bf2b234ac8b2f39fe3bb76932fd37bb281eb674fdea7d18991a160e
+++ /dev/null
@@ -1,302 +0,0 @@
-I"9
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
Screw in the antenna onto the SMA female connector.
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
-
-
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
-
-
Solder the panel and seal the panel using the gasket.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
-
-
-
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
-
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/38/5c299aa23c825e448bb402d0ab13a6e72e075f88cd47cb5b6e21058d948fc7 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/55/f4133f01c2ce141e5d83ffc8c95ef56dab8daba3cc926ecba83dbd5f40bbfd
similarity index 96%
rename from .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/38/5c299aa23c825e448bb402d0ab13a6e72e075f88cd47cb5b6e21058d948fc7
rename to .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/55/f4133f01c2ce141e5d83ffc8c95ef56dab8daba3cc926ecba83dbd5f40bbfd
index 46ac901..d2f356d 100644
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/38/5c299aa23c825e448bb402d0ab13a6e72e075f88cd47cb5b6e21058d948fc7
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/55/f4133f01c2ce141e5d83ffc8c95ef56dab8daba3cc926ecba83dbd5f40bbfd
@@ -1,4 +1,4 @@
-I"$9
Quality Assurance Procedure (QAP)
+I"ż9
Quality Assurance Procedure (QAP)
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
@@ -234,6 +234,8 @@
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
@@ -244,12 +246,17 @@
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
Solder the panel and seal the panel using the gasket.
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
Seal the panel using the gasket.
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
@@ -287,8 +294,9 @@
The sensor shall feel robust and when invereted there shall be no moving parts.
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5b/e687b4db96cd07d4b8a982adff69ad34e93e216a74010a3ac48b6d86dec53e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5b/e687b4db96cd07d4b8a982adff69ad34e93e216a74010a3ac48b6d86dec53e
deleted file mode 100644
index cb76f2f..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5b/e687b4db96cd07d4b8a982adff69ad34e93e216a74010a3ac48b6d86dec53e
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ŕ0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5c/03defc77c13b948238da9271f47240408423b50c0b5bb8a4c328d2976ee3c9 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5c/03defc77c13b948238da9271f47240408423b50c0b5bb8a4c328d2976ee3c9
deleted file mode 100644
index e9d8c3e..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5c/03defc77c13b948238da9271f47240408423b50c0b5bb8a4c328d2976ee3c9
+++ /dev/null
@@ -1,219 +0,0 @@
-I" 1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5c/6a526c49d54c325db5b413c274f4b1883eb13ef78caead88035b6b7c37d074 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5c/6a526c49d54c325db5b413c274f4b1883eb13ef78caead88035b6b7c37d074
deleted file mode 100644
index 4d9d5da..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5c/6a526c49d54c325db5b413c274f4b1883eb13ef78caead88035b6b7c37d074
+++ /dev/null
@@ -1,272 +0,0 @@
-I"”6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5e/b58374dd7e35c1815160ed3be19ff49151e19a2e16d73ca79a3624b0783809 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5e/b58374dd7e35c1815160ed3be19ff49151e19a2e16d73ca79a3624b0783809
new file mode 100644
index 0000000..90d71eb
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/5e/b58374dd7e35c1815160ed3be19ff49151e19a2e16d73ca79a3624b0783809
@@ -0,0 +1,314 @@
+I"Ç;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
+
Now secure the lid with screws
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/60/5225667b3f90e4c3030f1b3238baab22b5ce48f7cd6a09c8098bf062e3fbef b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/60/5225667b3f90e4c3030f1b3238baab22b5ce48f7cd6a09c8098bf062e3fbef
deleted file mode 100644
index 0f1a449..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/60/5225667b3f90e4c3030f1b3238baab22b5ce48f7cd6a09c8098bf062e3fbef
+++ /dev/null
@@ -1,256 +0,0 @@
-I"05
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/62/30e0953021a003240aeb247695b1efce7004388bb31ed2f49358af732da16c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/62/30e0953021a003240aeb247695b1efce7004388bb31ed2f49358af732da16c
deleted file mode 100644
index 9e29ba0..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/62/30e0953021a003240aeb247695b1efce7004388bb31ed2f49358af732da16c
+++ /dev/null
@@ -1,258 +0,0 @@
-I"·5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/62/4aa9e2af5a86d383a67cc8b8da4b2ef289392bce11d554c37d2a6b791440d1 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/62/4aa9e2af5a86d383a67cc8b8da4b2ef289392bce11d554c37d2a6b791440d1
deleted file mode 100644
index e11efd2..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/62/4aa9e2af5a86d383a67cc8b8da4b2ef289392bce11d554c37d2a6b791440d1
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ż3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/63/6771cb2053dfe6c4e0ef4a1dbd435d33ea5a532915459dda35e4f411f2ee12 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/63/6771cb2053dfe6c4e0ef4a1dbd435d33ea5a532915459dda35e4f411f2ee12
deleted file mode 100644
index 866a9e6..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/63/6771cb2053dfe6c4e0ef4a1dbd435d33ea5a532915459dda35e4f411f2ee12
+++ /dev/null
@@ -1,288 +0,0 @@
-I"J9
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/13c53bd00dd3e4a46f253019f321f5b28077063f7580571cd3f316be80336b b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/13c53bd00dd3e4a46f253019f321f5b28077063f7580571cd3f316be80336b
deleted file mode 100644
index a612d8b..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/13c53bd00dd3e4a46f253019f321f5b28077063f7580571cd3f316be80336b
+++ /dev/null
@@ -1,273 +0,0 @@
-I"ş6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/b4bdfb054ec345a8645db005f3314f334883a109a56122bbb3f231d426cfe4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/b4bdfb054ec345a8645db005f3314f334883a109a56122bbb3f231d426cfe4
deleted file mode 100644
index 49fe23a..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/b4bdfb054ec345a8645db005f3314f334883a109a56122bbb3f231d426cfe4
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ä0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/c97678077490e911ae4f5c176a32b294e06e0c0f7935a7afed035c13d8ef47 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/c97678077490e911ae4f5c176a32b294e06e0c0f7935a7afed035c13d8ef47
deleted file mode 100644
index 6898fee..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/65/c97678077490e911ae4f5c176a32b294e06e0c0f7935a7afed035c13d8ef47
+++ /dev/null
@@ -1,308 +0,0 @@
-I"!<
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/67/1facd3e2b457f4a52056a3130403a405bd604951cc6b9c68acca8aa9c4f763 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/67/1facd3e2b457f4a52056a3130403a405bd604951cc6b9c68acca8aa9c4f763
new file mode 100644
index 0000000..3bd4977
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/67/1facd3e2b457f4a52056a3130403a405bd604951cc6b9c68acca8aa9c4f763
@@ -0,0 +1,316 @@
+I"Ô;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
+
Now secure the lid with screws
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/68/64a719df3c406305aef288f4753e8e8d34845de32a587652e37645a6126c50 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/68/64a719df3c406305aef288f4753e8e8d34845de32a587652e37645a6126c50
deleted file mode 100644
index 64ab2d9..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/68/64a719df3c406305aef288f4753e8e8d34845de32a587652e37645a6126c50
+++ /dev/null
@@ -1,248 +0,0 @@
-I"•3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/6a/1ba59421bc256b916a4bcfc937f63e9418ec2a39467361eecb172a5920f845 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/6a/1ba59421bc256b916a4bcfc937f63e9418ec2a39467361eecb172a5920f845
new file mode 100644
index 0000000..870d489
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/6a/1ba59421bc256b916a4bcfc937f63e9418ec2a39467361eecb172a5920f845
@@ -0,0 +1,314 @@
+I" :
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/6b/ba0fbfa570274226092894c1b6b3d4671b9840ca33ae879102a9f358cfadfb b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/6b/ba0fbfa570274226092894c1b6b3d4671b9840ca33ae879102a9f358cfadfb
deleted file mode 100644
index 90fe426..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/6b/ba0fbfa570274226092894c1b6b3d4671b9840ca33ae879102a9f358cfadfb
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ż3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/71/a1d442bbfce72410f6852e63d9c6f40905651aba22a93f8dfd4a8e9f82d11d b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/71/a1d442bbfce72410f6852e63d9c6f40905651aba22a93f8dfd4a8e9f82d11d
deleted file mode 100644
index 1130c0d..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/71/a1d442bbfce72410f6852e63d9c6f40905651aba22a93f8dfd4a8e9f82d11d
+++ /dev/null
@@ -1,288 +0,0 @@
-I" 9
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/73/5eeebf727b77f5cd0bf78c415840a41fe1b3c2c9c66559b35bedb58c15ee0a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/73/5eeebf727b77f5cd0bf78c415840a41fe1b3c2c9c66559b35bedb58c15ee0a
deleted file mode 100644
index a57342d..0000000
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+++ /dev/null
@@ -1,219 +0,0 @@
-I" 1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
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-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/75/19da7abd513b4ecdbb7550367ac6c3003e81c7cf70bd86a5bd691e36263260 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/75/19da7abd513b4ecdbb7550367ac6c3003e81c7cf70bd86a5bd691e36263260
deleted file mode 100644
index b217b74..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/75/19da7abd513b4ecdbb7550367ac6c3003e81c7cf70bd86a5bd691e36263260
+++ /dev/null
@@ -1,302 +0,0 @@
-I"¤:
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
Insert the MCU back into the header pins
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/75/ce3029e8f3e20942d74bc3221f7e2422e46d9f8f5f684567cd5f73c5b9a102 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/75/ce3029e8f3e20942d74bc3221f7e2422e46d9f8f5f684567cd5f73c5b9a102
deleted file mode 100644
index 77abaa1..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/75/ce3029e8f3e20942d74bc3221f7e2422e46d9f8f5f684567cd5f73c5b9a102
+++ /dev/null
@@ -1,270 +0,0 @@
-I"b6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/76/1ca60a141226f6cbd0e27e2ca0643418c791820d8f880a045d818bfdf409a7 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/76/1ca60a141226f6cbd0e27e2ca0643418c791820d8f880a045d818bfdf409a7
deleted file mode 100644
index c10bc82..0000000
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+++ /dev/null
@@ -1,270 +0,0 @@
-I"U6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
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-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/76/d643656b8acd5274789e0912496e5e23a1df267b6806d4450afa8b128aa1b0 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/76/d643656b8acd5274789e0912496e5e23a1df267b6806d4450afa8b128aa1b0
deleted file mode 100644
index eac55e6..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/76/d643656b8acd5274789e0912496e5e23a1df267b6806d4450afa8b128aa1b0
+++ /dev/null
@@ -1,246 +0,0 @@
-I"h3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/78/d8253c6e677b27ddcf15235dbf1f082a43ca301ebedd551695f33dce46bb45 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/78/d8253c6e677b27ddcf15235dbf1f082a43ca301ebedd551695f33dce46bb45
deleted file mode 100644
index e550468..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/78/d8253c6e677b27ddcf15235dbf1f082a43ca301ebedd551695f33dce46bb45
+++ /dev/null
@@ -1,258 +0,0 @@
-I"S5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7a/beec39b84ff106e7d191065a8591ae80381cf04fde8ae2a3d0116a49aa84d8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7a/beec39b84ff106e7d191065a8591ae80381cf04fde8ae2a3d0116a49aa84d8
deleted file mode 100644
index 1f26022..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7a/beec39b84ff106e7d191065a8591ae80381cf04fde8ae2a3d0116a49aa84d8
+++ /dev/null
@@ -1,308 +0,0 @@
-I",<
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use an alarm or two-core wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7a/de28f66595a89c0dff7b27a265755ceb47280e4985b0bcdda460af0559eecc b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7a/de28f66595a89c0dff7b27a265755ceb47280e4985b0bcdda460af0559eecc
deleted file mode 100644
index 9b45c2d..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7a/de28f66595a89c0dff7b27a265755ceb47280e4985b0bcdda460af0559eecc
+++ /dev/null
@@ -1,254 +0,0 @@
-I"¦4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7c/3ce0c35a7d50298fc27018db7e5e0fe74ac941ca60d6edc7fa71f13c2bc0c8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7c/3ce0c35a7d50298fc27018db7e5e0fe74ac941ca60d6edc7fa71f13c2bc0c8
deleted file mode 100644
index 1193825..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7c/3ce0c35a7d50298fc27018db7e5e0fe74ac941ca60d6edc7fa71f13c2bc0c8
+++ /dev/null
@@ -1,256 +0,0 @@
-I"Ü4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be freely held by the JST connector.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7f/e04f6b97442ce2efae0636725edc15d7413a85707f62203dd87bd6550b9bd8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7f/e04f6b97442ce2efae0636725edc15d7413a85707f62203dd87bd6550b9bd8
deleted file mode 100644
index 794cac0..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7f/e04f6b97442ce2efae0636725edc15d7413a85707f62203dd87bd6550b9bd8
+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ĺ8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7f/f89d8fe4bbf94fbeb60652b5781db93169a9788589a0a61c14d9b59fea8f2f b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7f/f89d8fe4bbf94fbeb60652b5781db93169a9788589a0a61c14d9b59fea8f2f
new file mode 100644
index 0000000..b37488b
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/7f/f89d8fe4bbf94fbeb60652b5781db93169a9788589a0a61c14d9b59fea8f2f
@@ -0,0 +1,320 @@
+I"Ä;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/81/ec613812902543d3e438aee7f910daaf369d84f0570e95af5984af35d95b6c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/81/ec613812902543d3e438aee7f910daaf369d84f0570e95af5984af35d95b6c
deleted file mode 100644
index ea0057d..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/81/ec613812902543d3e438aee7f910daaf369d84f0570e95af5984af35d95b6c
+++ /dev/null
@@ -1,258 +0,0 @@
-I"T5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/83/a4249eb8bd88b1341c0f72665fcd572bb39c5447c4d66e76d5f9f2e122430c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/83/a4249eb8bd88b1341c0f72665fcd572bb39c5447c4d66e76d5f9f2e122430c
deleted file mode 100644
index aba9f0c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/83/a4249eb8bd88b1341c0f72665fcd572bb39c5447c4d66e76d5f9f2e122430c
+++ /dev/null
@@ -1,287 +0,0 @@
-I"ř8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/83/ba39bdbfa21f71f7ef35aa621340977fbeac76e6afe226bc994f6a03e8f312 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/83/ba39bdbfa21f71f7ef35aa621340977fbeac76e6afe226bc994f6a03e8f312
deleted file mode 100644
index 060ff86..0000000
Binary files a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/83/ba39bdbfa21f71f7ef35aa621340977fbeac76e6afe226bc994f6a03e8f312 and /dev/null differ
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/84/65d64c29ae7fdf902914ce02f4275b46cc06bf7b94a110013ace84d0f7ada2 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/84/65d64c29ae7fdf902914ce02f4275b46cc06bf7b94a110013ace84d0f7ada2
deleted file mode 100644
index 9b84708..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/84/65d64c29ae7fdf902914ce02f4275b46cc06bf7b94a110013ace84d0f7ada2
+++ /dev/null
@@ -1,320 +0,0 @@
-I"d=
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
-
-
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
-
-
Solder the panel and seal the panel using the gasket.
-
-
-
Adjust the length
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown in figure 29. Leave enough space to solder the solar panel.
-
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
-
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/85/9652d3d8f08d571a149d908ddabeab9649939723bdee67c874487c6a641fbc b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/85/9652d3d8f08d571a149d908ddabeab9649939723bdee67c874487c6a641fbc
deleted file mode 100644
index f03030f..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/85/9652d3d8f08d571a149d908ddabeab9649939723bdee67c874487c6a641fbc
+++ /dev/null
@@ -1,219 +0,0 @@
-I" 1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f0/7a0b2e366138031010c1ab0138343de2ffcb59d900d5e641984fc57efec590 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/87/4b30cd1a9130f5d1228e9a9279680b4f3f7696141cf16027c02c3f9bc43900
similarity index 90%
rename from .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f0/7a0b2e366138031010c1ab0138343de2ffcb59d900d5e641984fc57efec590
rename to .jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/87/4b30cd1a9130f5d1228e9a9279680b4f3f7696141cf16027c02c3f9bc43900
index 21573d6..4363e97 100644
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f0/7a0b2e366138031010c1ab0138343de2ffcb59d900d5e641984fc57efec590
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/87/4b30cd1a9130f5d1228e9a9279680b4f3f7696141cf16027c02c3f9bc43900
@@ -1,4 +1,4 @@
-I";
Quality Assurance Procedure (QAP)
+I"Ç;
Quality Assurance Procedure (QAP)
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
@@ -232,6 +232,11 @@
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
Stage 7 - Solar Panel Assembly
@@ -241,18 +246,35 @@
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
-
Solder the panel and seal the panel using the gasket.
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
@@ -266,35 +288,19 @@
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
Evaluation 3 - Sensor Operation
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
Final steps
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
+
Now secure the lid with screws
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
References
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/88/050d3716c1318073dd974239e102e440baeeea6ca7300817fa6d4827a4e87a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/88/050d3716c1318073dd974239e102e440baeeea6ca7300817fa6d4827a4e87a
new file mode 100644
index 0000000..b37488b
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/88/050d3716c1318073dd974239e102e440baeeea6ca7300817fa6d4827a4e87a
@@ -0,0 +1,320 @@
+I"Ä;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/89/cfe31c3dc835e723fc3fd74100c962f227124926ab894fdd8113c586f3b3d3 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/89/cfe31c3dc835e723fc3fd74100c962f227124926ab894fdd8113c586f3b3d3
deleted file mode 100644
index 348aafe..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/89/cfe31c3dc835e723fc3fd74100c962f227124926ab894fdd8113c586f3b3d3
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ä0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8a/e89195785fa9f062230b558e9cd72a286e7a990f0288263431405e2b277409 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8a/e89195785fa9f062230b558e9cd72a286e7a990f0288263431405e2b277409
deleted file mode 100644
index 1470e39..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8a/e89195785fa9f062230b558e9cd72a286e7a990f0288263431405e2b277409
+++ /dev/null
@@ -1,305 +0,0 @@
-I"Ě;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3D mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8b/a1d9972d357bd8df59336f163c4bef37c34b56babfdf6db9bf0c9003222458 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8b/a1d9972d357bd8df59336f163c4bef37c34b56babfdf6db9bf0c9003222458
deleted file mode 100644
index bed219c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8b/a1d9972d357bd8df59336f163c4bef37c34b56babfdf6db9bf0c9003222458
+++ /dev/null
@@ -1,289 +0,0 @@
-I"V9
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8c/dde62d485fcfc85b9f75b599af3e5d5332a711f7c465bfee9575c13a535212 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8c/dde62d485fcfc85b9f75b599af3e5d5332a711f7c465bfee9575c13a535212
new file mode 100644
index 0000000..306796d
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/8c/dde62d485fcfc85b9f75b599af3e5d5332a711f7c465bfee9575c13a535212
@@ -0,0 +1,316 @@
+I"˙:
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/91/1d5ea04fcd0be2c1b81f45d02df030d92a841f001de232bf5b7f76235cd0f2 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/91/1d5ea04fcd0be2c1b81f45d02df030d92a841f001de232bf5b7f76235cd0f2
deleted file mode 100644
index 4d9d5da..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/91/1d5ea04fcd0be2c1b81f45d02df030d92a841f001de232bf5b7f76235cd0f2
+++ /dev/null
@@ -1,272 +0,0 @@
-I"”6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/91/93983b44788bd28d2bcb4ba9dfa3c74e503b8820841d762fe357b221af9143 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/91/93983b44788bd28d2bcb4ba9dfa3c74e503b8820841d762fe357b221af9143
deleted file mode 100644
index 305cea4..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/91/93983b44788bd28d2bcb4ba9dfa3c74e503b8820841d762fe357b221af9143
+++ /dev/null
@@ -1,225 +0,0 @@
-I"ú1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/95/97384b88cb56c55f0969b697f05f966bf6155d9ed185dcf2dc6db84f3d5492 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/95/97384b88cb56c55f0969b697f05f966bf6155d9ed185dcf2dc6db84f3d5492
deleted file mode 100644
index f426138..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/95/97384b88cb56c55f0969b697f05f966bf6155d9ed185dcf2dc6db84f3d5492
+++ /dev/null
@@ -1,256 +0,0 @@
-I"ý4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/96/76c05002764c063c3913b88432b4629a0726e46ce42eb697e77d3faacd1a6c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/96/76c05002764c063c3913b88432b4629a0726e46ce42eb697e77d3faacd1a6c
deleted file mode 100644
index 3def908..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/96/76c05002764c063c3913b88432b4629a0726e46ce42eb697e77d3faacd1a6c
+++ /dev/null
@@ -1,249 +0,0 @@
-I"q3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
-
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9a/60b68e5825f291ab687757fa9f709e582414e6f434d7c3c6a0b0b854529086 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9a/60b68e5825f291ab687757fa9f709e582414e6f434d7c3c6a0b0b854529086
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+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ŕ0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9a/a0149137c4a0746050f993c9c4a598b29ebc4d59f5b8aa5573f3ebf3643b2f b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9a/a0149137c4a0746050f993c9c4a598b29ebc4d59f5b8aa5573f3ebf3643b2f
deleted file mode 100644
index 98e201f..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9a/a0149137c4a0746050f993c9c4a598b29ebc4d59f5b8aa5573f3ebf3643b2f
+++ /dev/null
@@ -1,258 +0,0 @@
-I"ö5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4..
-
Carefully without applying too much pressure on the solder joints, hold the wires little further away from the sensor and twist them like shown.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9c/ace7506f76631ac0340e01776cc0ae5bad19ac30a6cfdbac759068563ce314 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9c/ace7506f76631ac0340e01776cc0ae5bad19ac30a6cfdbac759068563ce314
deleted file mode 100644
index 5fbd151..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9c/ace7506f76631ac0340e01776cc0ae5bad19ac30a6cfdbac759068563ce314
+++ /dev/null
@@ -1,308 +0,0 @@
-I"&<
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9d/48104d769fe6f0bd45b19cd5740d33bb7364bcf226204cc3b637cc1f5ba025 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9d/48104d769fe6f0bd45b19cd5740d33bb7364bcf226204cc3b637cc1f5ba025
deleted file mode 100644
index 0ab5dcb..0000000
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+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ĺ8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9d/55980db632e8617b746e3a049bcf9ec6ba1a2f87356393a7c1d495df679d4f b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9d/55980db632e8617b746e3a049bcf9ec6ba1a2f87356393a7c1d495df679d4f
deleted file mode 100644
index 23ca4d5..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9d/55980db632e8617b746e3a049bcf9ec6ba1a2f87356393a7c1d495df679d4f
+++ /dev/null
@@ -1,252 +0,0 @@
-I"â3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9e/071a6b10a43917f32d7d97fc220a885ac7ca84ea82a27ec28e5010ba5f288a b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9e/071a6b10a43917f32d7d97fc220a885ac7ca84ea82a27ec28e5010ba5f288a
deleted file mode 100644
index b0d9205..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/9e/071a6b10a43917f32d7d97fc220a885ac7ca84ea82a27ec28e5010ba5f288a
+++ /dev/null
@@ -1,252 +0,0 @@
-I"O4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a4/45a8ca43bef3b8e5103d91da008e6511641642f3020e441aa372d175356cb8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a4/45a8ca43bef3b8e5103d91da008e6511641642f3020e441aa372d175356cb8
deleted file mode 100644
index f790546..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a4/45a8ca43bef3b8e5103d91da008e6511641642f3020e441aa372d175356cb8
+++ /dev/null
@@ -1,252 +0,0 @@
-I"[4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a4/9c7380fa91ab95f361f3403e1b343e8451830edfde90068ffdb82c078d97dc b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a4/9c7380fa91ab95f361f3403e1b343e8451830edfde90068ffdb82c078d97dc
deleted file mode 100644
index d9ca7b2..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a4/9c7380fa91ab95f361f3403e1b343e8451830edfde90068ffdb82c078d97dc
+++ /dev/null
@@ -1,225 +0,0 @@
-I"Ý1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a5/774e486681f6033fa25bd1e663987c1a3417138c1d06ffe88ec107ebfd53d7 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a5/774e486681f6033fa25bd1e663987c1a3417138c1d06ffe88ec107ebfd53d7
deleted file mode 100644
index 6a18897..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a5/774e486681f6033fa25bd1e663987c1a3417138c1d06ffe88ec107ebfd53d7
+++ /dev/null
@@ -1,305 +0,0 @@
-I"Č;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3D-mount and run the other end of the solar cable through the 3D-mount like shown in figure 29. Leave enough space to solder the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a7/ce7400a036aee29c243fe8a3f73bf2d6f1ad4f5cba205d93b61b2803aa3cb6 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a7/ce7400a036aee29c243fe8a3f73bf2d6f1ad4f5cba205d93b61b2803aa3cb6
deleted file mode 100644
index b203a44..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/a7/ce7400a036aee29c243fe8a3f73bf2d6f1ad4f5cba205d93b61b2803aa3cb6
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ż3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ad/7cf59236c0e76cab8425a0d7736d7e7101532091856cbfecb5b5257a93b4a9 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ad/7cf59236c0e76cab8425a0d7736d7e7101532091856cbfecb5b5257a93b4a9
deleted file mode 100644
index 77a6ee5..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ad/7cf59236c0e76cab8425a0d7736d7e7101532091856cbfecb5b5257a93b4a9
+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ĺ8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/b1/5fc94504ec3d85f165d72d2e7ba1759e3c6bb099b667e6db47fa875008fe96 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/b1/5fc94504ec3d85f165d72d2e7ba1759e3c6bb099b667e6db47fa875008fe96
deleted file mode 100644
index 4ff5408..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/b1/5fc94504ec3d85f165d72d2e7ba1759e3c6bb099b667e6db47fa875008fe96
+++ /dev/null
@@ -1,227 +0,0 @@
-I"E2
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/b9/e02feb9a03109a5b8f30bdd1f47d655652db196fcc4de1c81e6dcb697d1467 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/b9/e02feb9a03109a5b8f30bdd1f47d655652db196fcc4de1c81e6dcb697d1467
deleted file mode 100644
index 838cd28..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/b9/e02feb9a03109a5b8f30bdd1f47d655652db196fcc4de1c81e6dcb697d1467
+++ /dev/null
@@ -1,252 +0,0 @@
-I"˙3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ba/28d7db869fd5ff60ab9d497824ca5446d3af4b601a3693375d48f228392198 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ba/28d7db869fd5ff60ab9d497824ca5446d3af4b601a3693375d48f228392198
deleted file mode 100644
index 355aafb..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ba/28d7db869fd5ff60ab9d497824ca5446d3af4b601a3693375d48f228392198
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ż3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/bc/3a6fd44f4aecb0d1f0fffd6878ef0fb4c25905062dfede93982ef8fb2458d7 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/bc/3a6fd44f4aecb0d1f0fffd6878ef0fb4c25905062dfede93982ef8fb2458d7
new file mode 100644
index 0000000..4bdcb8f
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/bc/3a6fd44f4aecb0d1f0fffd6878ef0fb4c25905062dfede93982ef8fb2458d7
@@ -0,0 +1,322 @@
+I"N<
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/bf/2cb8d74f63a6d3b9fbc2ff9536449230ca875f54d5afba6dd34272db55d3fd b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/bf/2cb8d74f63a6d3b9fbc2ff9536449230ca875f54d5afba6dd34272db55d3fd
deleted file mode 100644
index 436b18b..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/bf/2cb8d74f63a6d3b9fbc2ff9536449230ca875f54d5afba6dd34272db55d3fd
+++ /dev/null
@@ -1,227 +0,0 @@
-I"x2
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c0/96342ed3cd520e6af8eccd7f7a60f14c581cf5a25b1e98437b3d6c97959ffb b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c0/96342ed3cd520e6af8eccd7f7a60f14c581cf5a25b1e98437b3d6c97959ffb
deleted file mode 100644
index 9bed00d..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c0/96342ed3cd520e6af8eccd7f7a60f14c581cf5a25b1e98437b3d6c97959ffb
+++ /dev/null
@@ -1,225 +0,0 @@
-I"ű1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c0/b2ffd3041fbb8225c8733780640f4f82d211fb598e1d5686cf5509840bc9e4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c0/b2ffd3041fbb8225c8733780640f4f82d211fb598e1d5686cf5509840bc9e4
deleted file mode 100644
index af59252..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c0/b2ffd3041fbb8225c8733780640f4f82d211fb598e1d5686cf5509840bc9e4
+++ /dev/null
@@ -1,288 +0,0 @@
-I" 9
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c2/a625d4b7d76d7fa1862e501296956ad45bfba0cb1d9a01493a33596e2f18c6 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c2/a625d4b7d76d7fa1862e501296956ad45bfba0cb1d9a01493a33596e2f18c6
deleted file mode 100644
index 49fe23a..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c2/a625d4b7d76d7fa1862e501296956ad45bfba0cb1d9a01493a33596e2f18c6
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ä0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c3/04a857f3fb00fc7a50c1c4634b336d4ea8dd40502edfaeeb2de5012072849e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c3/04a857f3fb00fc7a50c1c4634b336d4ea8dd40502edfaeeb2de5012072849e
deleted file mode 100644
index 6d85ae0..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c3/04a857f3fb00fc7a50c1c4634b336d4ea8dd40502edfaeeb2de5012072849e
+++ /dev/null
@@ -1,225 +0,0 @@
-I"î1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c3/7a92e96cdad31e2f8267619124c1104c1c622fb5502f238d9e3bbce7b95672 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c3/7a92e96cdad31e2f8267619124c1104c1c622fb5502f238d9e3bbce7b95672
deleted file mode 100644
index 6c3543e..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c3/7a92e96cdad31e2f8267619124c1104c1c622fb5502f238d9e3bbce7b95672
+++ /dev/null
@@ -1,248 +0,0 @@
-I"W3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c4/718096477fe0a2faba44857184960a1fbaa133c7f95087bc4713d378f0c2f8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c4/718096477fe0a2faba44857184960a1fbaa133c7f95087bc4713d378f0c2f8
deleted file mode 100644
index 52f6563..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c4/718096477fe0a2faba44857184960a1fbaa133c7f95087bc4713d378f0c2f8
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ć0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/13ec8258717b0835cbff9195a8ac9afd7837684e4cea41d753e86c9135e880 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/13ec8258717b0835cbff9195a8ac9afd7837684e4cea41d753e86c9135e880
deleted file mode 100644
index 6696999..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/13ec8258717b0835cbff9195a8ac9afd7837684e4cea41d753e86c9135e880
+++ /dev/null
@@ -1,252 +0,0 @@
-I"4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned OFF, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/5848e977c24d0bdf1a49c709ddd31166da8ae7568b04a34d1d230d83de6883 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/5848e977c24d0bdf1a49c709ddd31166da8ae7568b04a34d1d230d83de6883
deleted file mode 100644
index 5ccaab3..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/5848e977c24d0bdf1a49c709ddd31166da8ae7568b04a34d1d230d83de6883
+++ /dev/null
@@ -1,227 +0,0 @@
-I"E2
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/e04796b16f54b6f0e47072312d07e4f5d2a594612f76a930c763f993a485a2 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/e04796b16f54b6f0e47072312d07e4f5d2a594612f76a930c763f993a485a2
deleted file mode 100644
index 28cbba6..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c7/e04796b16f54b6f0e47072312d07e4f5d2a594612f76a930c763f993a485a2
+++ /dev/null
@@ -1,214 +0,0 @@
-I"·0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c8/f8d29b4faca149b3ea5affe3095ef5941708b59a5bf995990a45e29bebe9f5 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c8/f8d29b4faca149b3ea5affe3095ef5941708b59a5bf995990a45e29bebe9f5
deleted file mode 100644
index 858ae03..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c8/f8d29b4faca149b3ea5affe3095ef5941708b59a5bf995990a45e29bebe9f5
+++ /dev/null
@@ -1,276 +0,0 @@
-I"B7
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c9/4addeb763c43064574ce132fca4b555f19d174175e00570a4bea0cdf8d0247 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c9/4addeb763c43064574ce132fca4b555f19d174175e00570a4bea0cdf8d0247
deleted file mode 100644
index 5f5c186..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c9/4addeb763c43064574ce132fca4b555f19d174175e00570a4bea0cdf8d0247
+++ /dev/null
@@ -1,256 +0,0 @@
-I"ý4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c9/607471eeb0ae8739c394b47920359e1103f63a96021e53b3a50cd31832e1f9 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c9/607471eeb0ae8739c394b47920359e1103f63a96021e53b3a50cd31832e1f9
deleted file mode 100644
index 8e0fff8..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/c9/607471eeb0ae8739c394b47920359e1103f63a96021e53b3a50cd31832e1f9
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ŕ0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/cb/c94fbc5def9dc5d7f5506a5dba01b3c1a7195355b84762ffa531a45614d916 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/cb/c94fbc5def9dc5d7f5506a5dba01b3c1a7195355b84762ffa531a45614d916
deleted file mode 100644
index c74d908..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/cb/c94fbc5def9dc5d7f5506a5dba01b3c1a7195355b84762ffa531a45614d916
+++ /dev/null
@@ -1,256 +0,0 @@
-I">5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ce/4da464880590362a50425b67aeb04813ad67f03087f7ca5053167b7829d578 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ce/4da464880590362a50425b67aeb04813ad67f03087f7ca5053167b7829d578
new file mode 100644
index 0000000..ed16301
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ce/4da464880590362a50425b67aeb04813ad67f03087f7ca5053167b7829d578
@@ -0,0 +1,314 @@
+I"Ç;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
+
Now secure the lid with screws
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ce/e3c52ffb52b5257db8bdac72b60bd90753d32ee6d8de436c5ae2339f00b1e8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ce/e3c52ffb52b5257db8bdac72b60bd90753d32ee6d8de436c5ae2339f00b1e8
deleted file mode 100644
index a2b0569..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ce/e3c52ffb52b5257db8bdac72b60bd90753d32ee6d8de436c5ae2339f00b1e8
+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ĺ8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d0/45a488ac2dc8fd55e8b91f144e54b5816bc20ae8b6626dae405f5e482422f2 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d0/45a488ac2dc8fd55e8b91f144e54b5816bc20ae8b6626dae405f5e482422f2
deleted file mode 100644
index feb38b9..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d0/45a488ac2dc8fd55e8b91f144e54b5816bc20ae8b6626dae405f5e482422f2
+++ /dev/null
@@ -1,249 +0,0 @@
-I"q3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
-
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d1/0dc068ef6f440757c970d9900f25eed78c4eaf04e38ffcf80f3cd18ed4f56b b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d1/0dc068ef6f440757c970d9900f25eed78c4eaf04e38ffcf80f3cd18ed4f56b
deleted file mode 100644
index b44a078..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d1/0dc068ef6f440757c970d9900f25eed78c4eaf04e38ffcf80f3cd18ed4f56b
+++ /dev/null
@@ -1,216 +0,0 @@
-I"x0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d1/2f034eaac45d652fec8d41b73aa649f9658271821e459125e1f5b9b0b18906 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d1/2f034eaac45d652fec8d41b73aa649f9658271821e459125e1f5b9b0b18906
deleted file mode 100644
index 41eb19c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d1/2f034eaac45d652fec8d41b73aa649f9658271821e459125e1f5b9b0b18906
+++ /dev/null
@@ -1,216 +0,0 @@
-I"Ŕ0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4” as shown in figure 1.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor like shown in figure 2.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side like in figure 3.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol like in figure 4.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d2/2e88ed6723183d2eb04844f6fb5bbab8fc374f1970e41317cd3fb5d4d396fb b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d2/2e88ed6723183d2eb04844f6fb5bbab8fc374f1970e41317cd3fb5d4d396fb
deleted file mode 100644
index 21096f7..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d2/2e88ed6723183d2eb04844f6fb5bbab8fc374f1970e41317cd3fb5d4d396fb
+++ /dev/null
@@ -1,221 +0,0 @@
-I"ß1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d3/1a27c118ec28379a876b6012ac77c5963059ff8cc7c3669dec459ef82fb527 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d3/1a27c118ec28379a876b6012ac77c5963059ff8cc7c3669dec459ef82fb527
deleted file mode 100644
index 581096c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d3/1a27c118ec28379a876b6012ac77c5963059ff8cc7c3669dec459ef82fb527
+++ /dev/null
@@ -1,258 +0,0 @@
-I"đ5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4..
-
Carefully without applying too much pressure on the solder joints, hold the wires little further away from the sensor and twist them like shown.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d3/fff82209f04674f2d2aae637851c2c4c0fb31532ab7307c29e68e61c53e7ef b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d3/fff82209f04674f2d2aae637851c2c4c0fb31532ab7307c29e68e61c53e7ef
deleted file mode 100644
index 344708a..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d3/fff82209f04674f2d2aae637851c2c4c0fb31532ab7307c29e68e61c53e7ef
+++ /dev/null
@@ -1,299 +0,0 @@
-I">:
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
Insert the MCU back into the header pins
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d4/0cb94ad9802f9a92826ac873febf3ff8438586cec5e3818e7767d3896c4238 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d4/0cb94ad9802f9a92826ac873febf3ff8438586cec5e3818e7767d3896c4238
deleted file mode 100644
index ee3a7da..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d4/0cb94ad9802f9a92826ac873febf3ff8438586cec5e3818e7767d3896c4238
+++ /dev/null
@@ -1,248 +0,0 @@
-I"ż3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
-
-
Insert these male headers into female headers and place the MCU on top of the male headers. Now solder the header pins that lies on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d5/ddb9b9e15e9d8a0c2e87bfcca841a35d0144ad832d397aa0ca9f5c0aeb3c9e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d5/ddb9b9e15e9d8a0c2e87bfcca841a35d0144ad832d397aa0ca9f5c0aeb3c9e
deleted file mode 100644
index 640869a..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d5/ddb9b9e15e9d8a0c2e87bfcca841a35d0144ad832d397aa0ca9f5c0aeb3c9e
+++ /dev/null
@@ -1,285 +0,0 @@
-I"n8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE on PCB.
-
-
Connect GND of ultrasonic sensor to the G on PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 on PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX on PCB.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d7/1b4c4ad572525bcd70e3150879f8ea3bd89b3b76619da5097500bbef62aa63 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d7/1b4c4ad572525bcd70e3150879f8ea3bd89b3b76619da5097500bbef62aa63
deleted file mode 100644
index 79981d7..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d7/1b4c4ad572525bcd70e3150879f8ea3bd89b3b76619da5097500bbef62aa63
+++ /dev/null
@@ -1,252 +0,0 @@
-I"™4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d7/cc9684c5dd9bc27530a98054f07c2e06612bef23c5073d28e625ca77f3c221 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d7/cc9684c5dd9bc27530a98054f07c2e06612bef23c5073d28e625ca77f3c221
deleted file mode 100644
index edf6345..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d7/cc9684c5dd9bc27530a98054f07c2e06612bef23c5073d28e625ca77f3c221
+++ /dev/null
@@ -1,258 +0,0 @@
-I"B5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d8/138434a17e2ed54f64acb6773bbe28b531810ebdb79cf1e7e40df09266e00d b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d8/138434a17e2ed54f64acb6773bbe28b531810ebdb79cf1e7e40df09266e00d
deleted file mode 100644
index 7bbb618..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/d8/138434a17e2ed54f64acb6773bbe28b531810ebdb79cf1e7e40df09266e00d
+++ /dev/null
@@ -1,287 +0,0 @@
-I"Ĺ8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/da/13233312e541c99182c79426c193f09341d519619123adccfb7a3b6574a173 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/da/13233312e541c99182c79426c193f09341d519619123adccfb7a3b6574a173
deleted file mode 100644
index e982f7c..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/da/13233312e541c99182c79426c193f09341d519619123adccfb7a3b6574a173
+++ /dev/null
@@ -1,219 +0,0 @@
-I" 1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/da/4a2ac41df72a4128282cbd553e75f007b3a3b6d61dc37791ec947d37c95f20 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/da/4a2ac41df72a4128282cbd553e75f007b3a3b6d61dc37791ec947d37c95f20
deleted file mode 100644
index 127a271..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/da/4a2ac41df72a4128282cbd553e75f007b3a3b6d61dc37791ec947d37c95f20
+++ /dev/null
@@ -1,305 +0,0 @@
-I"Ě;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3D-mount and run the other end of the solar cable through the 3D-mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dc/104f46120179b0eb73dfffc826d1ac743c40a3e329210f8796985639a68246 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dc/104f46120179b0eb73dfffc826d1ac743c40a3e329210f8796985639a68246
new file mode 100644
index 0000000..0e25412
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dc/104f46120179b0eb73dfffc826d1ac743c40a3e329210f8796985639a68246
@@ -0,0 +1,316 @@
+I";
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dc/cfa3fb136c791b24b053f2eaa62d9d644dab4a2f15a245625a8573136c5a57 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dc/cfa3fb136c791b24b053f2eaa62d9d644dab4a2f15a245625a8573136c5a57
deleted file mode 100644
index 7778037..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dc/cfa3fb136c791b24b053f2eaa62d9d644dab4a2f15a245625a8573136c5a57
+++ /dev/null
@@ -1,248 +0,0 @@
-I"W3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dd/30b8f915ca42c826c12aaeca5f66b9487c859811db68c1876e1ba28c4b7870 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dd/30b8f915ca42c826c12aaeca5f66b9487c859811db68c1876e1ba28c4b7870
deleted file mode 100644
index ef12dd2..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dd/30b8f915ca42c826c12aaeca5f66b9487c859811db68c1876e1ba28c4b7870
+++ /dev/null
@@ -1,308 +0,0 @@
-I"-<
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna’s ULF end to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dd/32e86b6b452e61ecea7c405aecffbf0db0bcc8aa4483fd029dfdab751c81af b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dd/32e86b6b452e61ecea7c405aecffbf0db0bcc8aa4483fd029dfdab751c81af
deleted file mode 100644
index 7f534b0..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/dd/32e86b6b452e61ecea7c405aecffbf0db0bcc8aa4483fd029dfdab751c81af
+++ /dev/null
@@ -1,308 +0,0 @@
-I"%<
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/de/06c7e0434c2406a2b30961edd221540275d46e92795870ed1c38c118ccdbd3 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/de/06c7e0434c2406a2b30961edd221540275d46e92795870ed1c38c118ccdbd3
deleted file mode 100644
index dc89e14..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/de/06c7e0434c2406a2b30961edd221540275d46e92795870ed1c38c118ccdbd3
+++ /dev/null
@@ -1,304 +0,0 @@
-I"ű:
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
Insert the MCU back into the header pins
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/df/7b91e1d0c9be90afbc57a7630a7ee394f13f88ecd2283547e3d7dd8adbcd7e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/df/7b91e1d0c9be90afbc57a7630a7ee394f13f88ecd2283547e3d7dd8adbcd7e
deleted file mode 100644
index 16397a2..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/df/7b91e1d0c9be90afbc57a7630a7ee394f13f88ecd2283547e3d7dd8adbcd7e
+++ /dev/null
@@ -1,308 +0,0 @@
-I"˙:
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
-
-
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
-
-
Solder the panel and seal the panel using the gasket.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert the other end of the solar cable into the housing through a PG-7 cable gland.
-
-
-
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
-
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e1/fdbea18b485ff3401e6b7048120e5da52fe52e133583a4e78603a89c873bd8 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e1/fdbea18b485ff3401e6b7048120e5da52fe52e133583a4e78603a89c873bd8
deleted file mode 100644
index d62a1e6..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e1/fdbea18b485ff3401e6b7048120e5da52fe52e133583a4e78603a89c873bd8
+++ /dev/null
@@ -1,252 +0,0 @@
-I"H4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e4/99b1e06471f0aac60fdf1e368430402f4066cb2ec67ebdbd8b33e63645bf24 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e4/99b1e06471f0aac60fdf1e368430402f4066cb2ec67ebdbd8b33e63645bf24
deleted file mode 100644
index ab27681..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e4/99b1e06471f0aac60fdf1e368430402f4066cb2ec67ebdbd8b33e63645bf24
+++ /dev/null
@@ -1,248 +0,0 @@
-I"š3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e6/bffba196930164eefd50f9200eb4fc4fa782844d70129d1bd0c89437f90b7c b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e6/bffba196930164eefd50f9200eb4fc4fa782844d70129d1bd0c89437f90b7c
deleted file mode 100644
index 61681f9..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e6/bffba196930164eefd50f9200eb4fc4fa782844d70129d1bd0c89437f90b7c
+++ /dev/null
@@ -1,308 +0,0 @@
-I"ü:
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
-
-
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
-
-
Solder the panel and seal the panel using the gasket.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland.
-
-
-
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
-
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e6/cd224ac49f3d74447329c6963f871dda2fc398d59c3bea82ddb814a7abeda4 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e6/cd224ac49f3d74447329c6963f871dda2fc398d59c3bea82ddb814a7abeda4
deleted file mode 100644
index 157f687..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e6/cd224ac49f3d74447329c6963f871dda2fc398d59c3bea82ddb814a7abeda4
+++ /dev/null
@@ -1,302 +0,0 @@
-I"9
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
Screw in a male LoRa antenna onto the SMA female connector.
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
-
-
-
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
-
-
-
Solder the panel and seal the panel using the gasket.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
-
-
-
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
-
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e7/4fbc66e5bacfbe63e645b68b0d799af3df48c908e5d50eac14620162775565 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e7/4fbc66e5bacfbe63e645b68b0d799af3df48c908e5d50eac14620162775565
deleted file mode 100644
index 1fb79b8..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e7/4fbc66e5bacfbe63e645b68b0d799af3df48c908e5d50eac14620162775565
+++ /dev/null
@@ -1,258 +0,0 @@
-I"T5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e8/98ddd41044ea5a286e129150419301892710b3974a59dfaf3274072200cb5d b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e8/98ddd41044ea5a286e129150419301892710b3974a59dfaf3274072200cb5d
deleted file mode 100644
index 37016bd..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e8/98ddd41044ea5a286e129150419301892710b3974a59dfaf3274072200cb5d
+++ /dev/null
@@ -1,252 +0,0 @@
-I"H4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e8/b2a7f7ee383f90679c85b34574ec94a580856a2861596429eaea0565384c92 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e8/b2a7f7ee383f90679c85b34574ec94a580856a2861596429eaea0565384c92
deleted file mode 100644
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-I"ô1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
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-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
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-
-
Stage 5 - Ultrasonic Sensor Assembly
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-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
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-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
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-
-
Prepare the ends by tinning them like shown in the figure 26.
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-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
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-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
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-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
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-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
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-
-
Now secure the lid with screws {figure 41}
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-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e9/d506a1c1f9e6e06c64ae8475e8ecb96b2fa4d32ce9fe99c96867405136e5ee b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e9/d506a1c1f9e6e06c64ae8475e8ecb96b2fa4d32ce9fe99c96867405136e5ee
new file mode 100644
index 0000000..39405c3
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/e9/d506a1c1f9e6e06c64ae8475e8ecb96b2fa4d32ce9fe99c96867405136e5ee
@@ -0,0 +1,312 @@
+I"I:
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ec/68d355129bdcf50c0ef9d1edb4310feed714641b08c48ff3e4c110cc333cd5 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ec/68d355129bdcf50c0ef9d1edb4310feed714641b08c48ff3e4c110cc333cd5
deleted file mode 100644
index 566674b..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ec/68d355129bdcf50c0ef9d1edb4310feed714641b08c48ff3e4c110cc333cd5
+++ /dev/null
@@ -1,305 +0,0 @@
-I"Ý;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
-
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the housing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ed/49bf7f0e8f45c72f5f44c2b1be4cae9e0a7206624d599c1119729fb55b5ee6 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ed/49bf7f0e8f45c72f5f44c2b1be4cae9e0a7206624d599c1119729fb55b5ee6
deleted file mode 100644
index 3bd4488..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ed/49bf7f0e8f45c72f5f44c2b1be4cae9e0a7206624d599c1119729fb55b5ee6
+++ /dev/null
@@ -1,252 +0,0 @@
-I"đ3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ed/e290ea8fb8eb1ddd09f60e57d8b3cc6c5a8d5984b7fb44ec417045aabb8a3e b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ed/e290ea8fb8eb1ddd09f60e57d8b3cc6c5a8d5984b7fb44ec417045aabb8a3e
new file mode 100644
index 0000000..3b18888
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/ed/e290ea8fb8eb1ddd09f60e57d8b3cc6c5a8d5984b7fb44ec417045aabb8a3e
@@ -0,0 +1,318 @@
+I"m;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
+
+
+
Now secure the lid with screws {figure 41}
+
+
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
+
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f3/42649390535def5b8b5c11abe5cb067a45d5c8e67ce80c34beb17c9fcd2202 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f3/42649390535def5b8b5c11abe5cb067a45d5c8e67ce80c34beb17c9fcd2202
deleted file mode 100644
index f0cfedc..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f3/42649390535def5b8b5c11abe5cb067a45d5c8e67ce80c34beb17c9fcd2202
+++ /dev/null
@@ -1,250 +0,0 @@
-I"¦3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below.
-
-
Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f4/98b85418c61bd151845c827bc4b009322402310ec9ef1e48635bcf89ff288b b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f4/98b85418c61bd151845c827bc4b009322402310ec9ef1e48635bcf89ff288b
deleted file mode 100644
index 05cc6d3..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f4/98b85418c61bd151845c827bc4b009322402310ec9ef1e48635bcf89ff288b
+++ /dev/null
@@ -1,252 +0,0 @@
-I"H4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f6/0b77f73ddabcf9b86e43186f1caefbffd048dbabb6a6a645af1da538748891 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f6/0b77f73ddabcf9b86e43186f1caefbffd048dbabb6a6a645af1da538748891
deleted file mode 100644
index 63a9fac..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f6/0b77f73ddabcf9b86e43186f1caefbffd048dbabb6a6a645af1da538748891
+++ /dev/null
@@ -1,285 +0,0 @@
-I"n8
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f6/6c72e46cfdc7f404c20123ec3d3aed657cc90cfceb87df368a7bed925f3cf1 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f6/6c72e46cfdc7f404c20123ec3d3aed657cc90cfceb87df368a7bed925f3cf1
deleted file mode 100644
index ea17838..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f6/6c72e46cfdc7f404c20123ec3d3aed657cc90cfceb87df368a7bed925f3cf1
+++ /dev/null
@@ -1,216 +0,0 @@
-I"x0
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board like shown in figure 2.
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/147bdb66b6765edea347611709b9619e86e2e1d0ec2eb04d59940f603baa83 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/147bdb66b6765edea347611709b9619e86e2e1d0ec2eb04d59940f603baa83
deleted file mode 100644
index 1ee5170..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/147bdb66b6765edea347611709b9619e86e2e1d0ec2eb04d59940f603baa83
+++ /dev/null
@@ -1,290 +0,0 @@
-I"ö9
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/9ace34bf26ed6763c0a9f3505c22256ee8f1f3797a8f5606a56ff6757471b2 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/9ace34bf26ed6763c0a9f3505c22256ee8f1f3797a8f5606a56ff6757471b2
new file mode 100644
index 0000000..1b15bac
--- /dev/null
+++ b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/9ace34bf26ed6763c0a9f3505c22256ee8f1f3797a8f5606a56ff6757471b2
@@ -0,0 +1,314 @@
+I"Ç;
Quality Assurance Procedure (QAP)
+
+
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
+
+
Quality Assurance Procedure
+
+
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
+
+
+
+
The hole in the lid shall be able accommodate the Ultrasonic sensor.
+
+
+
+
+
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
+
+
+
+
+
+
Stage 2 - PCB Assembly
+
+
+
+
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
+
+
+
+
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
+
+
+
+
+
+
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
+
+
+
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
+
+
+
+
+
+
+
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
+
+
+
+
+
Turn the PCB around and make sure the switch is turned off.
+
+
+
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
+
+
+
+
+
+
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
+
+
+
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
+
+
+
+
+
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
+
+
+
+
+
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
+
+
+
+
+
+
+
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
+
+
+
+
Stage 4 - Battery Assembly
+
+
+
+
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
+
+
+
+
+
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
+
+
+
+
+
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
+
+
+
+
+
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
+
+
+
+
+
+
Evaluation 1 - Main voltage check
+
+
+
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
+
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
+
+
+
Stage 5 - Ultrasonic Sensor Assembly
+
+
+
+
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
+
+
+
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
+
+
+
+
+
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
+
+
+
+
+
+
+
Connect V+ of ultrasonic sensor to the VE of PCB.
+
+
Connect GND of ultrasonic sensor to the G of PCB.
+
+
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
+
+
Connect pin 5 of ultrasonic sensor to the RX of PCB.
+
+
+
+
+
+
Stage 6 - PCB Mounting and Antenna Assembly
+
+
+
+
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
+
+
+
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
+
+
+
+
+
Insert the PCB into the housing by sliding it under the antenna like shown.
+
+
+
+
+
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
+
+
+
+
+
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
+
+
+
+
+
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
+
+
+
+
Stage 7 - Solar Panel Assembly
+
+
+
+
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
+
+
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
+
+
+
+
+
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
+
+
+
Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
+
+
+
Seal the panel using the gasket.
+
+
+
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
+
+
+
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
+
+
+
+
Evaluation 2 - Solar Panel Operation
+
+
+
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
+
+
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
+
+
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
+
+
+
Evaluation 3 - Sensor Operation
+
+
+
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
+
+
+
Final steps
+
+
+
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
+
Now secure the lid with screws
+
The sensor shall feel robust and when invereted there shall be no moving parts.
+
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
+
+:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/dbcd5109b920388f922579cfe940cd9587a7685938d66251504ce63d4323bc b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/dbcd5109b920388f922579cfe940cd9587a7685938d66251504ce63d4323bc
deleted file mode 100644
index 6a6cc6f..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f8/dbcd5109b920388f922579cfe940cd9587a7685938d66251504ce63d4323bc
+++ /dev/null
@@ -1,219 +0,0 @@
-I"1
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below in figure 3 (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
Turn the PCB around and make sure the switch is turned of like shown in figure 4.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown in the figure 5.
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in figure 5.
-
-
-
Now Solder battery out screw terminals into BAT OUT like shown in figure 6.
-
-
-
Using a multimeter check for shorts and connectivity like shown in figure 7. Further quality of the soldering shall be checked at this step and identify and resolve any soldering errors.
-
-
-
-
Stage 3 - MCU Assembly
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below figure 9.
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
Stage 3 - Battery Assembly
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f9/b24a849380bc41289ff5319214e5ae2b54d17904a3ca7681e71d73ef305ce3 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f9/b24a849380bc41289ff5319214e5ae2b54d17904a3ca7681e71d73ef305ce3
deleted file mode 100644
index d9aab25..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/f9/b24a849380bc41289ff5319214e5ae2b54d17904a3ca7681e71d73ef305ce3
+++ /dev/null
@@ -1,258 +0,0 @@
-I"T5
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fc/42f4c46a85c60c806b451a6c28c185baa12d9fdc208c085fc49189005c8d45 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fc/42f4c46a85c60c806b451a6c28c185baa12d9fdc208c085fc49189005c8d45
deleted file mode 100644
index 4ea8408..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fc/42f4c46a85c60c806b451a6c28c185baa12d9fdc208c085fc49189005c8d45
+++ /dev/null
@@ -1,247 +0,0 @@
-I"3
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the number of through holes on the PCB and the female header pins like shown in the below.
-
-
-
Mount the MCU male headers into female headers like shown in the figure 10 below.
-
-
-
Solder MCU header pins on the top of the MCU while the MCU is securely held by the female header pins on the bottom like shown in figure 11.
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below in figure 12.
-
-
-
Now, connect the 2 ends of the JST connector from the MCU with the BAT OUT into their corresponding terminals VB and G respectively like shown in the figure 13 below.
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 3 - Battery Assembly
-
-
-
-
Remove the MCU from the female header pins and insert a fully charged 400mAh battery into the BAT IN and secure the battery by using a tape like shown in the figure 14 below.
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Then, insert the JST 2 pin connecter on the back side of MCU like shown below in figure 8.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps - figure 16.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
-
Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
-
-
-
Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fd/15100d60ac14db7caae8be1cc3b785ec7114c8b947c9ba8ec942b7d2fb9254 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fd/15100d60ac14db7caae8be1cc3b785ec7114c8b947c9ba8ec942b7d2fb9254
deleted file mode 100644
index bc8d7d5..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fd/15100d60ac14db7caae8be1cc3b785ec7114c8b947c9ba8ec942b7d2fb9254
+++ /dev/null
@@ -1,306 +0,0 @@
-I"R;
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
-
-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
-
-
-
-
-
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
-
-
-
-
-
-
Connect V+ of ultrasonic sensor to the VE of PCB.
-
-
Connect GND of ultrasonic sensor to the G of PCB.
-
-
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
-
-
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
-
-
-
-
-
Stage 6 - PCB Mounting and Antenna Assembly
-
-
-
-
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
-
-
-
Connect the antenna to the MCU and secure the other end into the housing using a nut.
-
-
-
-
-
Insert the PCB into the housing by sliding it under the antenna like shown.
-
-
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
-
-
-
-
-
Insert the MCU back into the header pins
-
-
-
-
Stage 7 - Solar Panel Assembly
-
-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
-
-
-
Prepare the ends by tinning them like shown in the figure 26.
-
-
-
Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
-
-
-
Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
-
-
-
Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
-
-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
-
Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
diff --git a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fe/018cb2b9a6308db2d3b6f37f8a0bd75149cbe33042b184c694d19926d9f9a0 b/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fe/018cb2b9a6308db2d3b6f37f8a0bd75149cbe33042b184c694d19926d9f9a0
deleted file mode 100644
index 841ecde..0000000
--- a/.jekyll-cache/Jekyll/Cache/Jekyll--Converters--Markdown/fe/018cb2b9a6308db2d3b6f37f8a0bd75149cbe33042b184c694d19926d9f9a0
+++ /dev/null
@@ -1,254 +0,0 @@
-I"¦4
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
-
-
-
-
The hole in the lid shall be able accommodate the Ultrasonic sensor.
-
-
-
-
-
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
-
-
-
-
-
-
Stage 2 - PCB Assembly
-
-
-
-
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
-
-
-
-
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity like shown in figure 4. Repeat this process for every trace.
-
-
-
-
-
-
The both ends of a trace shall have connectivity. Across different traces continuity shall not be observed unless they share the common pin like GND or V+.
-
-
-
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
-
-
-
-
-
-
-
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
-
-
-
-
-
Turn the PCB around and make sure the switch is turned off.
-
-
-
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
-
-
-
-
-
-
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
-
-
-
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
-
-
-
-
-
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
-
-
-
-
-
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
-
-
-
-
-
-
-
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
-
-
-
-
Stage 4 - Battery Assembly
-
-
-
-
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
-
-
-
-
-
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
-
-
-
-
-
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
-
-
-
Mount the MCU back onto the headers and make sure the battery is not under pressure or being crushed by the MCU. When the battery and MCU are looking like figure 15, there must be enough space between the MCU and battery.
-
-
-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on like shown below in figure 15.
-
Turn off the switch before proceeding to next steps.
-
-
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Stage 5 - Ultrasonic Sensor Assembly
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-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4 respectively like shown in figure 20.
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Now twist the cables like shown below in figure 21.
Stack 2 washers that come with the lock nut like shown below in figure 22.
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Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
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-
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Stage 6 - PCB Mounting
-
-
-
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
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Stage 7 - Solar Panel Assembly
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Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
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Prepare the ends by tinning them like shown in the figure 26.
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Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
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Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
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Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
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Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
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Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
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Evaluation 2 - Solar Panel Operation
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Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
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Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
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Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
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Stage 8 - Antenna Assembly
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Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
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Secure it using a screw from the outside like shown in figure 36
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Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
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Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
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Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
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Final steps
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Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
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Now secure the lid with screws {figure 41}
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The sensor shall feel robust and when invereted there shall be no moving parts.
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Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
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Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
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-I"¬6
Quality Assurance Procedure (QAP)
-
-
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
-
-
Quality Assurance Procedure
-
-
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
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The hole in the lid shall be able accommodate the Ultrasonic sensor.
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Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
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Stage 2 - PCB Assembly
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Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
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To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
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The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
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While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
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Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
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-
-
-
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Turn the PCB around and make sure the switch is turned off.
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Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
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Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
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Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
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Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
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With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
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Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
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Stage 4 - Battery Assembly
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With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
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Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
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Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
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Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
-
-
-
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-
-
Evaluation 1 - Main voltage check
-
-
-
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
-
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
-
-
-
Stage 5 - Ultrasonic Sensor Assembly
-
-
-
-
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
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-
-
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
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Insert US into the housing lid secure it using a lock nut on the inside of the housing lid like shown in figure 23.
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Stage 6 - PCB Mounting
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-
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Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the one shown in the figure 24.
-
Insert the MCU back into the header pins
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Stage 7 - Solar Panel Assembly
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-
-
-
Use a {fill-me-in} wire and cut it to a length of {fill-me-in} like shown in the figure 25.
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-
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Prepare the ends by tinning them like shown in the figure 26.
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-
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Place the nut of the PG-7 cable gland inside the housing and insert this prepared end of the wire into the hosuing through a PG-7 cable gland like shown in the figure 27.
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Screw in the ends into the Solar screw terminals into the respective pins like shown in figure 28.
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Stick one side of the gasket onto the 3d mount and run the other end of the solar cable through the 3d mount like shown in figure 29. Leave enough space for soldering the solar panel.
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-
Now, prepare the ends by stripping the wires and tinning them and solder the ends onto the Solar board like shown in figure 30.
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Screw the open ends of the solar cable into the screw terminal SOLAR through the cable gland and check connectivity between the solar panel and screw terminals like shown in figure 31.
-
-
-
Evaluation 2 - Solar Panel Operation
-
-
-
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND {figure 32}
-
-
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter like shown below. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. {figure 33}
-
-
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen on the VS. {figure 34}
-
-
-
Stage 8 - Antenna Assembly
-
-
-
Stack a star washer and lock washer and insert the end of the antenna with threading into the housing from the inside like shown in the figure 35
-
Secure it using a screw from the outside like shown in figure 36
-
Insert the ulf connector of the antenna onto the MCU like shown in figure 37.
-
Screw in the LoRa Antenna from the outside like shown in the figure 38. The antenna should feel tight after screwing onto the threading. If not, try washers of different size.
-
-
-
Evaluation 3 - Sensor Operation
-
-
-
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. {figure 39}
-
-
-
Final steps
-
-
-
-
Close the lid and make sure the ultrasonic sensor wires goes to the {} to avoid the wires being in the way. {figure 40}
-
-
-
Now secure the lid with screws {figure 41}
-
-
-
The sensor shall feel robust and when invereted there shall be no moving parts.
-
-
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. {figure 42}
-
Remove the tape on the gasket and install the solar panel onto the 3D mount {figure 43}
-
-:ET
\ No newline at end of file
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@@ -43,7 +43,7 @@
},"7": {
"doc": "Quality Assurance Procedure",
"title": "Quality Assurance Procedure",
- "content": "# Quality Assurance Procedure (QAP) This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality. **:** * [General](#general) + [Purpose](#purpose) * [Quality Assurance Procedure](#quality-assurance-process) + [Stage 1 - PCB Assembly](#stage-1---pcb-assembly) + [Stage 2 - MCU Assembly](#stage-2---mcu-assembly) + [Stage 3 - Battery Assembly](#stage-3---battery-assembly) + [Evaluation 1 - Main voltage check](#evaluation-1---main-voltage-check) + [Stage 4 - Housing Preperation](#stage-4---housing-preperation) + [Stage 5 - Ultrasonic Sensor Assembly](#stage-5---ultrasonic-sensor-assembly) + [Stage 6 - PCB Mounting](#stage-6---pcb-mounting) + [Stage 7 - Solar Panel Assembly](#stage-7---solar-panel-assembly) + [Evaluation 2 - Solar Panel Operation](#evaluation-2---solar-panel-operation) + [Stage 8 - Antenna Assembly](#stage-8---antenna-assembly) + [Evaluation 3 - Sensor Operation](#evaluation-3---sensor-operation) + [Final steps](#final-steps) * [References](#references) ## General ### Purpose The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency. ## Quality Assurance Procedure The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality. ### Stage 1 - Housing Preparation Instructions on using the step drill are [here](https://cdn.shopify.com/s/files/1/0012/0350/3168/files/4210T.Manual.20190108.pdf?3927471806556549811) 1. Secure the housing lid using a vice and drill a hole of diameter 1 1/4\". The hole in the lid shall be able accommodate the Ultrasonic sensor. 2. Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2\" on one side and 1/4\" on the other side. ### Stage 2 - PCB Assembly 1. Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol. To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace. The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+. 2. While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board. 3. Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies. 4. Turn the PCB around and make sure the switch is ***turned off***. 5. Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below. Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures. 6. Now Solder battery out screw terminals into **BAT OUT** like below. 7. Using a multimeter check for shorts and connectivity. Further quality of the soldering shall be checked at this step and [identify and resolve any soldering errors](https://learn.adafruit.com/adafruit-guide-excellent-soldering?view=all#common-problems). ### Stage 3 - MCU Assembly 1. Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure. 2. Insert these male headers into female headers and place the MCU's first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below. 3. With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins. 4. Using a multimeter check for the connectivity between the MCU pins and the screw terminals. ### Stage 4 - Battery Assembly 1. With the switch turned ***off***, remove the MCU from the female header pins and insert a ***fully charged*** 400 mAh battery into the **BAT IN**. 2. Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below. 3. Connect the JST connector with **BAT OUT** into their corresponding **VB** and **G**, respectively, as shown below. 4. Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU. ### Evaluation 1 - Main voltage check 1. Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be **VBat** - the battery's voltage level, across **VB** and **GND** when the s/w is on. 2. ***Turn off*** the switch before proceeding to next steps when the evaluation has been successfully completed. ### Stage 5 - Ultrasonic Sensor Assembly 1. Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor's pins - GND, V+, 5 and 4. 2. Carefully, without applying too much pressure on the solder joints, twist them like shown. 3. Check for connectivity and any [common soldering errors](https://learn.adafruit.com/adafruit-guide-excellent-soldering?view=all#common-problems). 4. Stack 2 washers that come with the lock nut like shown below. 5. Insert US into the housing lid secure it using a lock nut on the inside of the housing lid. 6. Connect V+ of ultrasonic sensor to the VE of PCB. Connect GND of ultrasonic sensor to the G of PCB. Connect pin 4 of ultrasonic sensor to the G5 of PCB. Connect pin 5 of ultrasonic sensor to the RX of PCB. ### Stage 6 - PCB Mounting and Antenna Assembly 1. Using a plier, cut the legs on the bottom of the soldered PCB to save some room. 2. Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut. 3. Insert the PCB into the housing by sliding it under the antenna like shown. 4. Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2\" hole shall be facing the solar input. 5. Insert the MCU back into the header pins and screw the other end of the PCB into the housing. 6. Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector. ### Stage 7 - Solar Panel Assembly 1. Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them. *Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.* 2. Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown. 3. Solder the panel to this end that runs through the 3D-mount and gasket. 4. Seal the panel using the gasket. 5. Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland. 6. Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland. ### Evaluation 2 - Solar Panel Operation 1. Check for connectivity between both the ends of the solar cable. Also check for shorts between the **VS** and **GND**. 2. Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. 2. Now with the light is being flashed onto the panel, verify the **VS** is the ***positive*** terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across **VS** and **GND**. ### Evaluation 3 - Sensor Operation 1. Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. ### Final steps 1. Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40} 2. Now secure the lid with screws {figure 41} 3. The sensor shall feel robust and when invereted there shall be no moving parts. 4. Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. ## References 1. [*ER Quality Program Plan*, ES/*ER*/TM-4/R4. (*MMES 1994a*)](https://rais.ornl.gov/documents/tm117.pdf) 2. [The Spruce, Wire connection problems and solutions](https://www.thespruce.com/wire-connection-problems-and-solutions-1152877) 3. [Adafruit's Tutorial on Good Soldering Practices](https://learn.adafruit.com/adafruit-guide-excellent-soldering?view=all) 4. [How to Solder: Through-hole Soldering](https://learn.sparkfun.com/tutorials/how-to-solder-through-hole-soldering/all) ",
+ "content": "# Quality Assurance Procedure (QAP) This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality. **:** * [General](#general) + [Purpose](#purpose) * [Quality Assurance Procedure](#quality-assurance-process) + [Stage 1 - PCB Assembly](#stage-1---pcb-assembly) + [Stage 2 - MCU Assembly](#stage-2---mcu-assembly) + [Stage 3 - Battery Assembly](#stage-3---battery-assembly) + [Evaluation 1 - Main voltage check](#evaluation-1---main-voltage-check) + [Stage 4 - Housing Preperation](#stage-4---housing-preperation) + [Stage 5 - Ultrasonic Sensor Assembly](#stage-5---ultrasonic-sensor-assembly) + [Stage 6 - PCB Mounting](#stage-6---pcb-mounting) + [Stage 7 - Solar Panel Assembly](#stage-7---solar-panel-assembly) + [Evaluation 2 - Solar Panel Operation](#evaluation-2---solar-panel-operation) + [Stage 8 - Antenna Assembly](#stage-8---antenna-assembly) + [Evaluation 3 - Sensor Operation](#evaluation-3---sensor-operation) + [Final steps](#final-steps) * [References](#references) ## General ### Purpose The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency. ## Quality Assurance Procedure The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality. ### Stage 1 - Housing Preparation Instructions on using the step drill are [here](https://cdn.shopify.com/s/files/1/0012/0350/3168/files/4210T.Manual.20190108.pdf?3927471806556549811) 1. Secure the housing lid using a vice and drill a hole of diameter 1 1/4\". The hole in the lid shall be able accommodate the Ultrasonic sensor. 2. Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2\" on one side and 1/4\" on the other side. ### Stage 2 - PCB Assembly 1. Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol. To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace. The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+. 2. While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board. 3. Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies. 4. Turn the PCB around and make sure the switch is ***turned off***. 5. Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below. Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures. 6. Now Solder battery out screw terminals into **BAT OUT** like below. 7. Using a multimeter check for shorts and connectivity. Further quality of the soldering shall be checked at this step and [identify and resolve any soldering errors](https://learn.adafruit.com/adafruit-guide-excellent-soldering?view=all#common-problems). ### Stage 3 - MCU Assembly 1. Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure. 2. Insert these male headers into female headers and place the MCU's first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below. 3. With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins. 4. Using a multimeter check for the connectivity between the MCU pins and the screw terminals. ### Stage 4 - Battery Assembly 1. With the switch turned ***off***, remove the MCU from the female header pins and insert a ***fully charged*** 400 mAh battery into the **BAT IN**. 2. Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below. 3. Connect the JST connector with **BAT OUT** into their corresponding **VB** and **G**, respectively, as shown below. 4. Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU. ### Evaluation 1 - Main voltage check 1. Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be **VBat** - the battery's voltage level, across **VB** and **GND** when the s/w is on. 2. ***Turn off*** the switch before proceeding to next steps when the evaluation has been successfully completed. ### Stage 5 - Ultrasonic Sensor Assembly 1. Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor's pins - GND, V+, 5 and 4. 2. Carefully, without applying too much pressure on the solder joints, twist them like shown. 3. Check for connectivity and any [common soldering errors](https://learn.adafruit.com/adafruit-guide-excellent-soldering?view=all#common-problems). 4. Stack 2 washers that come with the lock nut like shown below. 5. Insert US into the housing lid secure it using a lock nut on the inside of the housing lid. 6. Connect V+ of ultrasonic sensor to the VE of PCB. Connect GND of ultrasonic sensor to the G of PCB. Connect pin 4 of ultrasonic sensor to the G5 of PCB. Connect pin 5 of ultrasonic sensor to the RX of PCB. ### Stage 6 - PCB Mounting and Antenna Assembly 1. Using a plier, cut the legs on the bottom of the soldered PCB to save some room. 2. Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut. 3. Insert the PCB into the housing by sliding it under the antenna like shown. 4. Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2\" hole shall be facing the solar input. 5. Insert the MCU back into the header pins and screw the other end of the PCB into the housing. 6. Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector. ### Stage 7 - Solar Panel Assembly 1. Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them. *Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.* 2. Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown. 3. Solder the panel to this end that runs through the 3D-mount and gasket. 4. Seal the panel using the gasket. 5. Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland. 6. Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland. ### Evaluation 2 - Solar Panel Operation 1. Check for connectivity between both the ends of the solar cable. Also check for shorts between the **VS** and **GND**. 2. Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts. 2. Now with the light is being flashed onto the panel, verify the **VS** is the ***positive*** terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across **VS** and **GND**. ### Evaluation 3 - Sensor Operation 1. Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm. ### Final steps 1. Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. 2. Now secure the lid with screws 3. The sensor shall feel robust and when invereted there shall be no moving parts. 4. Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing. ## References 1. [*ER Quality Program Plan*, ES/*ER*/TM-4/R4. (*MMES 1994a*)](https://rais.ornl.gov/documents/tm117.pdf) 2. [The Spruce, Wire connection problems and solutions](https://www.thespruce.com/wire-connection-problems-and-solutions-1152877) 3. [Adafruit's Tutorial on Good Soldering Practices](https://learn.adafruit.com/adafruit-guide-excellent-soldering?view=all) 4. [How to Solder: Through-hole Soldering](https://learn.sparkfun.com/tutorials/how-to-solder-through-hole-soldering/all) ",
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"relUrl": "/quality-management/quality-assurance-procedure/"
},"8": {
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-Jekyll2021-10-04T16:43:13-04:00/feed.xmlFloodNet DocumentationFloodNet Documentation website
\ No newline at end of file
+Jekyll2021-10-05T10:29:02-04:00/feed.xmlFloodNet DocumentationFloodNet Documentation website
\ No newline at end of file
diff --git a/_site/quality-management/quality-assurance-procedure/index.html b/_site/quality-management/quality-assurance-procedure/index.html
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@@ -1 +1 @@
- Quality Assurance Procedure - FloodNet DocumentationQuality Assurance Procedure | FloodNet Documentation
Quality Assurance Procedure (QAP)
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
Quality Assurance Procedure
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
The hole in the lid shall be able accommodate the Ultrasonic sensor.
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
Stage 2 - PCB Assembly
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
Turn the PCB around and make sure the switch is turned off.
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
Stage 4 - Battery Assembly
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
Evaluation 1 - Main voltage check
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
Stage 5 - Ultrasonic Sensor Assembly
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
Connect V+ of ultrasonic sensor to the VE of PCB.
Connect GND of ultrasonic sensor to the G of PCB.
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
Connect pin 5 of ultrasonic sensor to the RX of PCB.
Stage 6 - PCB Mounting and Antenna Assembly
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
Insert the PCB into the housing by sliding it under the antenna like shown.
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
Stage 7 - Solar Panel Assembly
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
Solder the panel to this end that runs through the 3D-mount and gasket.
Seal the panel using the gasket.
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
Evaluation 2 - Solar Panel Operation
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
Evaluation 3 - Sensor Operation
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
Final steps
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
Now secure the lid with screws {figure 41}
The sensor shall feel robust and when invereted there shall be no moving parts.
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
This document details the Quality Assurance Procedure (QAP) at FloodNet. This document details every stage of the build/assembly procedure to ensure a good sensor build quality.
The main objective of this document is to establish and execute Quality Assurance Procedure (QAP) to produce high quality sensor builds with consistency.
Quality Assurance Procedure
The QAP shall be followed by all the personnel responsible for performing and verifying work affecting sensor quality.
Secure the housing lid using a vice and drill a hole of diameter 1 1/4”.
The hole in the lid shall be able accommodate the Ultrasonic sensor.
Similarly using a step drill and a vice, on the sides with no mounting support, drill a hole of diameter 1/2” on one side and 1/4” on the other side.
Stage 2 - PCB Assembly
Gather a multimeter and check the PCB for any manufacturing defects. Choose the continuity setting on the multimeter indicated by a small microphone symbol.
To perform the PCB fault check, place one probe on the beginning of the trace and the other on the ending and check for connectivity as shown in the figure below. Repeat this process for every trace.
The both ends of a trace shall have connectivity. Across different traces, continuity shall not be observed unless they share the common pin like GND or V+.
While placing the PCB upside down, Solder a 2-pin JST connector into the Battery IN facing towards the center of the board.
Now with PCB in the same position, solder the three legs of the slide switch into the ON OFF pins like shown below (There are a total of 5 legs on this components and the legs on the either ends need not to be soldered, i.e. the middle three are the ones that need soldering). The switch does not have polarity but just on and off depending on where the slider lies.
Turn the PCB around and make sure the switch is turned off.
Now with the PCB placed upside down, solder screw terminals for Ultrasonic Sensor and Solar input like shown below.
Note: All the holes of the screw terminal shall be facing the text on the PCB like shown in above figures.
Now Solder battery out screw terminals into BAT OUT like below.
Now cut the MCU male headers to match the 8-pin female headers as shown in the below figure.
Insert these male headers into female headers and place the MCU’s first eight pins, both sides on top of these male headers. Solder header pins while the MCU is securely held by the female header pins, as shown in the figure below.
With the PCB upside down solder the female header pins into the PCB like shown below. Make sure PCB is facing the right direction and inserted into the correct pins.
Using a multimeter check for the connectivity between the MCU pins and the screw terminals.
Stage 4 - Battery Assembly
With the switch turned off, remove the MCU from the female header pins and insert a fully charged 400 mAh battery into the BAT IN.
Prepare a 2 Pin JST connector by tanning the other ends. Insert the connecter on the back side of MCU as shown below.
Connect the JST connector with BAT OUT into their corresponding VB and G, respectively, as shown below.
Mount the MCU back onto the headers and make sure the battery is not under any pressure or being crushed by the MCU. When done correctly battery should be only held by the JST connector and sits comfortably under the MCU.
Evaluation 1 - Main voltage check
Turn on the switch and check the voltage at BAT OUT. The multimeter reading should be VBat - the battery’s voltage level, across VB and GND when the s/w is on.
Turn off the switch before proceeding to next steps when the evaluation has been successfully completed.
Stage 5 - Ultrasonic Sensor Assembly
Tan both ends of 4 different colored wires and solder one end of the wires onto the Ultrasonic sensor’s pins - GND, V+, 5 and 4.
Carefully, without applying too much pressure on the solder joints, twist them like shown.
Stack 2 washers that come with the lock nut like shown below.
Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
Connect V+ of ultrasonic sensor to the VE of PCB.
Connect GND of ultrasonic sensor to the G of PCB.
Connect pin 4 of ultrasonic sensor to the G5 of PCB.
Connect pin 5 of ultrasonic sensor to the RX of PCB.
Stage 6 - PCB Mounting and Antenna Assembly
Using a plier, cut the legs on the bottom of the soldered PCB to save some room.
Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
Insert the PCB into the housing by sliding it under the antenna like shown.
Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2” hole shall be facing the solar input.
Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
Stage 7 - Solar Panel Assembly
Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.
Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
Solder the panel to this end that runs through the 3D-mount and gasket.
Seal the panel using the gasket.
Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
Evaluation 2 - Solar Panel Operation
Check for connectivity between both the ends of the solar cable. Also check for shorts between the VS and GND.
Flash light onto the solar panel and check voltages on the screw terminals using a multimeter. When a phone falshlight is flashed upon the panel, it should read atleast 3 Volts.
Now with the light is being flashed onto the panel, verify the VS is the positive terminal. If not, the solar panel has been soldered in reverse and shall be re-soldered so that a positive voltage is seen across VS and GND.
Evaluation 3 - Sensor Operation
Flash the test firmware and check the battery voltage and ultrasonic measurements on TTN console. The battery voltage shall be between 3.7 Volts and 4.2 Volts. Since we would be using a fully charged battery, it should read voltage greater than 4 Volts. The distance reading on the TTN console shall be greater than or equal to 300 and less than or equal to the maximum range of the sensor model. The 5-meter model range is 300mm to 5000mm and the 10-meter model range is 300mm to 10000mm.
Final steps
Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
Now secure the lid with screws
The sensor shall feel robust and when invereted there shall be no moving parts.
Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
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diff --git a/docs/quality-management/quality-assurance-process.markdown b/docs/quality-management/quality-assurance-process.markdown
index 2e3368a..54b3c7c 100644
--- a/docs/quality-management/quality-assurance-process.markdown
+++ b/docs/quality-management/quality-assurance-process.markdown
@@ -154,9 +154,9 @@ Instructions on using the step drill are [here](https://cdn.shopify.com/s/files/
5. Insert US into the housing lid secure it using a lock nut on the inside of the housing lid.
-
+
-
+
6. Connect V+ of ultrasonic sensor to the VE of PCB.
@@ -166,7 +166,7 @@ Instructions on using the step drill are [here](https://cdn.shopify.com/s/files/
Connect pin 5 of ultrasonic sensor to the RX of PCB.
-
+
### Stage 6 - PCB Mounting and Antenna Assembly
@@ -174,38 +174,56 @@ Instructions on using the step drill are [here](https://cdn.shopify.com/s/files/
2. Connect the MHF4 female to the MCU and secure SMA female end into the housing using a nut.
-
+
3. Insert the PCB into the housing by sliding it under the antenna like shown.
-
+
4. Lift the MCU and screw the PCB onto the mounting headers on the base of the housing. The orientation shall match the housing holes: 1/2" hole shall be facing the solar input.
-
+
5. Insert the MCU back into the header pins and screw the other end of the PCB into the housing.
-
+
6. Screw in a male LoRa antenna (should support 915 MHz) onto the SMA female connector.
+
+
### Stage 7 - Solar Panel Assembly
1. Cut an alarm cable or 2 conductor wire to a length of 30cm or 12 inches. Prepare the ends by tinning them.
*Note: Adjust the length so that cable can reach from the sensor to the panel based on the chosen mount.*
+
+
2. Stick one side of the gasket onto the 3D-mount and run one end of the solar cable through the 3D-mount like shown.
+
+
3. Solder the panel to this end that runs through the 3D-mount and gasket.
+
+
+
+
4. Seal the panel using the gasket.
+
+
5. Place the nut of the PG-7 cable gland inside the housing and insert the other prepared end of the solar cable into the housing through a PG-7 cable gland.
+
+
6. Screw the open ends of the solar cable into the screw terminal SOLAR. Secure the cable gland.
+
+
+
+
### Evaluation 2 - Solar Panel Operation
1. Check for connectivity between both the ends of the solar cable. Also check for shorts between the **VS** and **GND**.
@@ -219,12 +237,9 @@ Instructions on using the step drill are [here](https://cdn.shopify.com/s/files/
### Final steps
-1. Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way. {figure 40}
-
-2. Now secure the lid with screws {figure 41}
-
+1. Close the lid and make sure the ultrasonic sensor wires goes into the space safely to avoid them being in the way.
+2. Now secure the lid with screws
3. The sensor shall feel robust and when invereted there shall be no moving parts.
-
4. Inspect the sensor mechanical quality of the following: holes, mounts, securing enclosure, waterproofing.
## References
MCU.
