The Nickelphone – work in progress

Here’s a work in progress video of my home-made musical instrument, the Nickelphone.

It’s a coin-based music keyboard.  15 nickels and 10 pennies act as touch sensors on a traditional 25-key piano-style layout.  It currently emits one tone at a time through a little piezo buzzer, but it will eventually emit MIDI signals so it can drive a full synthesizer (like FL Studio).  Based on an ATmega644 microcontroller and coded in Arduino with the CapacitiveSensor library for touch sensing.

I’ll do a full write-up here when it’s done.

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