I've had my printer (ender3 s1 pro) on klipper for a while. I turned it on for the first time in maybe a month and it wouldn't connect to the MCU. I ran some updates on mainsail but had no luck. I had this happen almost a year ago and can't remember how to fix this. I've tried to flash my board with the new .bin file but no luck.
#MCU Unable to connect
4 messages · Page 1 of 1 (latest)
Fix your tags #readme
This has nothing to do with Mainsail
Run apt list udev on your pi and send the output.
Make sure that the printer is powered and the used cable still working and seated correctly
I have that same issue expect I am in th emiddle of installing mainsail Klipper. and get that running the apt list udev