Every laptop has one - a touchpad/trackpad - for controlling the mouse.
I'd like to build my own, external one. I've looked around and I cannot find a tutorial. I have come across 1 example where a webcam is used, but this is an optical touchpad, whereas I want a capacitive touchpad. I don't want to build a tiny one like on laptops; I want to make one at least the size of a mousepad.
Work by Yang Zhang is great and I'd love to do this, but unfortunately I cannot find an demo (checked his github for code, too).
Can anyone point me in the right direction or provide some information? Thanks.