Arduino Theremin
This project has yet to be constructed.
More details will appear soon.
The theremin is a unique electronic musical instrument. Pitch and volume are
determined by the proximity of the instrumentalist's hands to two metal antennas.
One antenna controls pitch, the other volume. Hand position causes variations
in the frequency of an oscillator. The closer the left hand the louder the sound.
The closer the right hand the higher the pitch. Both can be altered simultaneously.
Here is a link to an Arduino blog about the theremin