Autonomous Theremin

https://youtu.be/yb1v9autypk
Firstly, this isn't really a theremin, it only changes pitch, instead of pitch and volume. Also it changes pitch using a reading from a distance sensor instead of using radio waves, but I thought that autonomous theremin was the best description of what this thing is. It was made using mostly spare 3D printer parts, as well as a few other electronic components. It is controlled using an arduino. I've uploaded a rough circuit diagram as well as the code. If you've watched the video I've attached video of this thing in motion, you'll have realised how out of tune it is. It is limited by the accuracy of the distance sensor and the speed of the motor, so if anyone else tries this, in order to play a recognisable song, you'll need a really accurate distance sensor.

Materials
3D Printed Parts
- Base + Stand (these two parts form a casing for the electronics)
- Plate (this is the part that moves up and down that the distance sensor detects)
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