I have a pet project I’ve been working on to modernize an electric organ console, and one of the final things needed are toggle switches. On a modern organ these are able to be manually toggled, or they can be flipped up/down programmatically using electromagnets (video). The ones purpose built for this are obscenely expensive but I can’t find anything even remotely similar. Am I crazy for thinking this kind of switch are used in more things than just organs?
Neat idea with the key switches. Could be multiplexed like a keyboard matrix. With smart LEDs and some way to multiplex the output stage as well (or some shift registers), this could be nicely implemented one an esp32 or something.