@chrisb I logged into your device remotely and everything almost looks OK, but the RPi is giving a lot of internal USB port overcurrent warnings (not the same thing as the current indicator). Is it possible something is physically shorted out or has water damage on the RPi? I’ve only seen this happen to one other customer, and they had water damage issues.
Can you:
- Inspect the device for short circuits, crossed wires, moisture damage, water, etc…
- Move the Arduino to a different USB port
and let me know if that helps?