Ender 3 V2 not connecting

General Discussion
22

If the settings and connection between RPi and printer board is not fully working, then the display will be blank

I suggest following approach:

  1. Provision a new SD, e.g. with MainsailOS via the Raspberry Pi Imager
  2. Fix the Debian bug either via Debian Bullseye Bug causing Klipper to no longer find the printer board or if you feel adventurous via Debian Bullseye Bug Remedy Script - #5 by Sineos
  3. Run KIAUH and install
    • Klipper
    • Moonraker
    • fluidd OR Mainsail
  4. Put the config with the correct serial into ~/printer_data/config/printer.cfg
  5. Restart the Klipper service with sudo systemctl restart klipper
  6. Navigate to webinterface via your browser under http://your-rpi-ip
  7. Now you should have a convenient access to edit the config, download the klippy.log etc

If you have issue then, post the klippy.log and we shall continue from there.