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?
You could potentially use servos to toggle regular switches.
But I’d go with the other route: momentary switches, latches, and some kind of indicator. The latches can be driven in parallel by either the momentary switches or your electronics.
RGB keyswitches might be an option for both the switch and the indicator.
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.