This Project was made to show of my Electronic and IT skills.

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The Story behind the Project is relatively simple. I was Scrolling through Pinterest and looking at some DIY Smartwatches. Pinterest then suggested to me a Hackaday article about Retro LED Segment-displays/Matrix-displays, in which i immeadetly found interest. One of the listed Displays did catch my Eye, the HDSP-2000 Series Alphanumeric Matrix Display in DIP-Package format made by HP. In that moment i knew i needed one of these Chips just to play around, perhaps even use in an actual Project; This is that Project. So i Started to Design my ESP32s3 based smartwatch which would use the HDSP-2000 as the Display.

• Design a RTC/c Circuit
• Design the HDSP-2000 Driver Circuit
• Add a Buzzer
• Add an IO expander
• Add Testpads
• SMD Solder the PCB
• Test the PCB ==without== the Displays to verify the Driver Circuit
• Test the PCB ==with== the Displays
• SUCCESS! 🎉

1. Order the PCB from JLCPCB or PCBWAY (not sponsored)
2. Solder the componenets onto the board (i recommend the SAND TECHNIQUE)
3. Test the PCB for connection errors or Shorts
4. insert your favorite colored HDSP-2000 series display (or other Compatible models)
5. Flash the Firmware download here.
6. Download the App from here.
7. SUCCESS! 🎉