Yes Pin 38 is 0V/GND. All other GND are connected to that so you could use any of those.
You will also need an in-line diode for your connection to Pin 39 if you intend to connect via USB while external power is used.
You will also need an in-line diode for your connection to Pin 39 if you intend to connect via USB while external power is used.
Statistics: Posted by hippy — Mon Jul 14, 2025 1:04 pm