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Discreetly modifying an old Twister mat to transmit MIDI note events when the circles are touched.

Using 24 force-sensitive resistors, some ADCs, and an ESP-32, I’ve built a Bluetooth MIDI controller from an old Twister mat. The hardware is all battery powered and protected by a wooden case, so the mat can safely be placed close to falling bodies but far away from any expensive noise-making equipment. See full build video in project details, and check the Github page for source code.”

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