I got stuck, troubleshooting my #BTT #BigTreeTech #Octopus 1.1 mainboard, installed in newly assembled #RatRig #V-core #3Dprinter, running #RatOS aka #Klipper.

Both #nozzle (#extruder) #heater and #hotbed one do not warm up. Beyond all doubt (using external power sources and hairdryer) I confirmed that both thermistors, heaters and wiring are ok.

Under warranty, RatRig sent me replacement board, which I configured, flashed with updated firmware and got the same error.
I also tried to redirect the nozzle heater power to another pin (see in the config file at https://lib.tepewu.pl/f/8f1d29fe05d44c77a329/) where I hooked up the multimeter. Nothing happened, when I set up nozzle temp to 50*C - after timeout I had the same error "extruder is not heating fast enough", thus klipper shutdown.

I cannot believe to have such a bad luck to got two boards with the same hardware fault (especially that steppers and hotbed probe work perfectly), so it is something I do not know - and I run out of ideas.

Please, somebody suggest something new. Hjalp.

printer.cfg

Share link for printer.cfg.

^Czytelnia