The brunt of the work is done by the Pi running Purr Data (a version of Pure Data), but the 3 Arduinos are controlling all the hardware and sending and receiving signals to Pure Data via comport (for two of them) and via Bluetooth LE for a little portable screen thing. Here's a Reddit post, pure data forum post, GitHub link (that has all the Arduino code), and video. Let me know if you have any questions. If you end up getting something out of this or making something like this I'd love to hear about it. Best, Tombot7
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