Details for building a USB keyboard and touchpad controller from an old laptop.
This repo contains all the files that are needed to make a USB keyboard/touchpad controller as well as a KVM from an old laptop.
See the USB keyboard video at https://vimeo.com/458595950 and the updated video at https://vimeo.com/888367797?share=copy
See the keyboard "Instructable" at https://www.instructables.com/id/How-to-Make-a-USB-Laptop-Keyboard-Controller/
Instead of the manual method to create the key matrix, use Marcel's Python program which I've forked and updated so it will work with the Teensy 4.0, 4.1, and 2.0++.
The updated Python code is here:
https://github.com/thedalles77/USB_Laptop_Keyboard_Controller-1/blob/master/matrixgenerator.py