Printer is a newish Ender 5 Plus, the Pi is an older Pi3 that was sitting around, no SD card inserted and running UFW 2.74a from TH3D. If the E5+ has the temp manually set with the Pi not powered up when the Pi powers up the temp gets reset to 0. Really can't troubleshoot this as it's a boot problem. Anyway to stop this annoyance?
Probably not the answer you were looking for but power up the Pi before you power up the printer.
My RPi 3B connected to my LulzBot TAZ 6 is on 24x7. It doesn't use much power and is useful without turning the 3D printer on. The printer is plugged into a smart plug which the RPi can control.
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