That is going to be incredibly tricky for a person to get running, as you first need to understand how to work with a rp2040 microcontroller, then how to make the software to communicate between the two boards.
None of the scripts they supply will run on a piCore based OS. As the scripts rely on installing programs In RaspiOS. Which do not work on piCore. Building the microcontroller program is the most complicated part for you.