cf discussion with Alan https://bsky.app/profile/benetou.fr/post/3lpcbfiwdpk2r and his original idea https://alanlaidlaw.com/tablescroll-an-experiment-in-analog-spatial-computing

I do have the Raspberry Pi Build HAT https://www.raspberrypi.com/products/build-hat/ so more sensors could be added and it could be remotely controlled via Python (or any language with right bindings) or NodeJS server instead, without the GUI.