EmonTx4's unstable behavior

[FredM67 (Fred Metrich)]

Well, so I’ll have to disassemble it… and probably solder a couple of pin headers, right?

[FredM67 (Fred Metrich)]

@TrystanLea

I think this under-powered supply is causing your issues. It’s also difficult to pickup 5V from the PCB with e.g a wire link for an easy fix.

Btw, here’s my fix for the missing 5V access.

[FredM67 (Fred Metrich)]

@awjlogan

To change the fuses, you’ll need to upload the Arduino bootloader again through the UDPI header.

Surgery done… what next ?