Raspberry Pi, Sensors, Hardware, DIY, Python.
JP1~JP5 and the MCP3008 chip are soldered to the top layer, so traces have to connect from the bottom layer. I used GPIO0 (pin 27) instead of GPIO22 in the schematic, only to make the routing easier. The code needs to be changed accordingly: cs = digitalio.DigitalInOUt(board.D0) MCP3008 supports 8