Basic Information: Printer Model: Anycubic Predator MCU / Printerboard: SKR 1.4 Turbo klippy.log klippy.log (325.7 KB) Describe your issue: “MCU ‘rpi’: Unable to connect. Once the underlying issue is corrected, use the ‘FIRMWARE_RESTART’ command to reset the firmware, reload the configuratio…

mcu 'rpi': Unable to open port: [Errno 2] No such file or directory: '/tmp/klipper_host_mcu' You have the Pi set up as a secondary MCU for your adxl. When you reinstalled the OS you deleted all of files that make that work. You need to reinstall that. https://www.klipper3d.org/RPi_microcontroller.…

Thank you, I checked and I am on “deb11u4”, i asume, if i understood it correctly, that the OS is not at fault.

I took your advice and simply commented out the lines for the ADXL, and boom, it indeed worked. I now installed the ADXL following the guides provided by klipper3d.org , but sadly, I’m unable to get the ADXL working again. I wired everything up, installed the dependencies, enabled SPI, and added tho…

See @jakep_82 answer. You need to setup the RPi MCU again as per above linked documentation.

I did that, same result :frowning:

Please reboot your Pi, then make sure that the Klipper MCU service is actually running. You can do this with the command systemctl status klipper-mcu.service and the output should look like: klipper-mcu.service - Starts the MCU Linux firmware for klipper on startup Loaded: loaded (/etc/syst…

I checked, and the service was not running. I did set up the rpi mcu again, and now it works, dont know why it weren’t working before, third times the charm I guess :slight_smile: Everything is up and running again, thank you very much :heart_eyes:

Klipper Broken Again?

General Discussion

Sineos October 10, 2023, 10:31am 2

Check if Debian 11 (Bullseye) udev bug - No board or serial found is applicable

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Klipper Broken Again?

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