Legendary Mitch Altman writes in the IEEE Spectrum how the ArduTouch Music Synthesizer was created.
As a kid with a lust for music, I was rocked by the Moog synthesizer sounds of 1968’s Switched-On Bach. I needed to learn how to make those sounds! Thus began a lifetime of learning and synthesizer making … I wanted to provide them with a kit that was simple to assemble [PDF] and use but still a fully fledged music synthesizer.
The result was the US $30 ArduTouch. This project incorporates, on a single board, a touch keyboard, an ATMega328P (the same processor used in the Arduino Uno), and an audio amp with a speaker. It also has a software library that can serve as an entry point into the world of digital signal processing.
Check out the article for more detail and you can hear more in the Youtube video below from Mitch.
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