Klipper cant communicate with mcu

[EddyMI3D]

If you use USB to CANbridge mode, you may have a look on this:

Raspi 4 failing to make usb connection to MCU

If you are using Klipper in “USB to CAN bridge” mode then the micro-controller is not a “serial device” and will never show up in /dev/serial/. (When Klipper runs in “USB to CAN bridge” mode it instead behaves as a “gs_usb” can bus adapter.) When in this mode, it can therefore not be discovered as a serial device and is also therefore not impacted by a system issue involving the reporting of serial devices. Cheers, -Kevin