Printer Model: Ender 3 Pro MCU / Printerboard: BTT EBB42 / Creality 4.2.2 Host / SBC: Raspberry Pi 4b klippy.log Describe your issue: I just finished installing a BTT EBB42 board with the USB to CANbus expansion board from BTT. Everything is wired up properly. Everything has been tuned using…

Found the source of the problem. I have a shop light that’s mounted above the printer and the AC power cord was too close to the CAN cable. I rerouted the power cable to keep it at least a foot away, and the firmware restarts stopped. Thanks for the help everyone!

Random Firmware Restarts

General Discussion

Sineos July 21, 2025, 4:09pm 6

See Timeout with MCU / Lost communication with MCU

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Random Firmware Restarts

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