My brother just finished building an automatic pipe organ for his Mechanical Engineering senior project. Or maybe you'd call it a street organ since it has no keyboard. It has midi input on some arduino-like device, 3d printed pipes, a hand crank pump to fill the bellows, and a bunch of shift registers, relays, and solenoids (on breadboards at this point) to open the valves for the pipes. It turned out really nice, and was a hit at the project showcase. I was involved in helping him figure out the electronics and the code, though I think he threw out the code I wrote in favor of using ChatGPT. All in all, it's not a technically difficult thing to make, though I have the benefit of his hindsight at this point. Maybe I'll get him to write it up at some point.
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My brother just finished building an automatic pipe organ for his Mechanical Engineering senior project. Or maybe you'd call it a street organ since it has no keyboard. It has midi input on some arduino-like device, 3d printed pipes, a hand crank pump to fill the bellows, and a bunch of shift registers, relays, and solenoids (on breadboards at this point) to open the valves for the pipes. It turned out really nice, and was a hit at the project showcase. I was involved in helping him figure out the electronics and the code, though I think he threw out the code I wrote in favor of using ChatGPT. All in all, it's not a technically difficult thing to make, though I have the benefit of his hindsight at this point. Maybe I'll get him to write it up at some point.