If you are a musician and you are also a Hackaday reader, there’s a good chance you’ll own at least one MIDI instrument. A synthesizer of some description, maybe a keyboard, or perhaps a drum machine. A pipe organ? Probably not.
If you answer to the name of [Wendell Kapustiak] though, you’d say yes to that question. He’s built himself a beautiful pipe organ from scratch, with hand-tuned wooden pipes, and for a modern touch he’s made it MIDI controlled. An Arduino Due sends its commands to a set of solenoid drivers, the solenoids then control the air flow from his wind chest through a set of plastic tubes to his organ pipes. Air supply comes from a shop vac in a sound-insulated box, with a pressure regulating chamber. The result is not perfect, he believes that the pipes are too close together and this somehow makes them difficult to tune, but to an outsider’s eye it’s a pretty impressive instrument.
[Wendell] is both a skilled and prolific maker, and his blog is rather a good read. The organ project is spread over a few years, so to get the full picture it is best to read his previous posts on the subject as well as the one first linked. He recounts his early experiments as well as giving us details of the electronics and the pipes. He’s put up a video showing the completed instrument which you can see below the break, and another more recently showing a recent one-LED-per-note modification.
Continue reading “A Pipe Organ For The MIDI Generation”