Get USB Serial from Motherboard

Connect your printer to one of the Pad's USB ports.

Connect in SSH then enter the following command to retrieve the motherboard USB serial:

ls /dev/serial/by-id/*

You should see the USB serial appear like this (serial is different depending on the motherboard):

Go to your Mainsail Web interface then click on Machine tab.

Open printer.cfg file and find [mcu] section.

Edit the following existing line with serial you have just obtained like this:

serial: /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0

Click on SAVE & RESTART at the top right to save the file.

Your printer should connect to your PAD.

You now need to make changes to KlipperScreen, continue at Update KlipperScreen.