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README.md

RPi-SenseStation Electric Circuit

This directory contains electric circuit schematic sheet, which was made/designed by me to help understand how to wire between these small pieces of devils.

You can open the schematic file using EasyEDA. Note that this schematic is not made for printing PCB, as many of parts missing their PCB footprints and many parameters may not optimized for it.

Schematic preview

Preview image of electric circuit sheet

Pinouts

  • Mean Well RS-15-5 A/C to D/C power supply
    from to
    A/C L L from A/C wall power cord
    A/C N N from A/C wall power cord
    GND Ground from A/C wall power cord, not necessary but recommended
    D/C V+ V+ from USB type micro-B cable + VCC from HDD SATA to USB cable
    D/C V- V- from USB type micro-B cable + GND from HDD SATA to USB cable
    Data wires(D+, D-) from USB type micro-B cable are not connected
    Power wires(VCC, GND) from RPi USB are not connected
  • MCP3008 ADC converter
    from to
    VDD (#16) RPi 5V
    VREF (#15) RPi 5V
    DGND (#9) RPi GND
    AGND (#14) RPi GND
    DIN (#11) RPi MOSI (#19)
    DOUT (#12) RPi MISO (#21)
    CSSHDN (#10) RPi CS1 (#26)
    CLK (#13) RPi SCLK (#23)
    CH0 (#1) Sound sensor AO
    CH1 (#2) CdS light sensor AO
    CH2 (#3) Gas sensor AOUT
  • HDD SATA to USB converter (cable modded)
    from to
    VCC PSU D/C V+
    GND PSU D/C V-
    D+ Raspberry Pi USB port D+
    D- Raspberry Pi USB port D-
  • Pi-FAN
    from to
    VCC RPi 5V (#4)
    GND RPi GND (#6)
  • Sense HAT
    from to
    3V3 (#1) RPi 3V3 (#1)
    5V (#2) RPi 5V (#2)
    GND RPi GND
    I2C SDA (#3) RPi I2C SDA (#3)
    I2C SCL (#5) RPi I2C SDA (#5)
    IMU Interrupt 1 (#16) RPi GPIO23 (#16)
    IMU Interrupt 2 (#18) RPi GPIO24 (#18)
    ... other pinouts not connected
  • Power switch
    from to
    Common Guard resistor between switch and RPi GPIO21 (#40)
    NO RPi GND
    NC not connected
  • DHT11 module
    from to
    VCC RPi 5V
    GND RPi GND
    DATA RPi GPIO27 (#13)
  • Vibration sensor module
    from to
    VCC RPi 5V
    GND RPi GND
    DOUT RPi GPIO17 (#11)
  • IR receive module
    from to
    VCC RPi 5V
    GND RPi GND
    S RPi GPIO5 (#29)
  • IR send module
    from to
    VCC RPi 5V
    GND RPi GND
    DAT RPi GPIO6 (#31)
  • Sound pressure sensor module
    from to
    VCC RPi 5V
    GND RPi GND
    AO MCP3008 CH0 (#1)
    DO not connected
  • CdS light sensor module
    from to
    VCC RPi 5V
    GND RPi GND
    AO MCP3008 CH1 (#2)
    DO not connected
  • Gas sensor module
    from to
    VCC RPi 5V
    GND RPi GND
    AOUT MCP3008 CH2 (#3)
    DOUT not connected