Simon Newhouse

That makes sense... I'll see what happens with a usb serial dongle.

ok, doesn't crash a usb ftdi ( possibly fake ) dongle ! Dunno if you'd like to try and make it not crash the built in uart, but it'd be...

Hummmmm...... so it looks like although this doesn't actively crash a usb dongle, it does kill the data for about 3 seconds !

I also get this error but only when running headless.

FYI, My workaround was to use PyVirtualDisplay to convince it that it wasn't headless !

This took me like 3 evenings of swearing to figure out, but you need to downgrade your esp32 tool chain to the one the code was originally written for. Bitluni's...

I meant the esp32 toolchain that can be integrated into the arduino IDE via the board manager and the external URL that you add in to the preferences.. V1.0.1 worked...