Theremax – an Arduino theremin using an ultrasonic sensor

My brother and I spent a long weekend together in a hackathon-like fashion to create a theremin-like instrument using an ultrasonic sensor. The user waves his/her hand in front of the sensor to chose a note, and can adjust the octave using a knob. There is also a record mode which creates a loop that the user can edit on-the-fly.

Some photos of the final product:

The source code and circuit diagram can be found here:

This project was made with the help of my brother, Mark Wilson. Check out his site:

A video demo of theremax:

A time lapse video of the creation of the theremax:


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