Theremin as a Capacitive Sensing Device
Theremins are early musical devices, controlled by no physical contact. The device antenna creates oscillations for frequency that detects hands. The electrical signals of the theremin are amplified and send to a load speaker.
I followed the steps of this tutorial. http://interface.khm.de/index.php/lab/experiments/theremin-as-a-capacitive-sensing-device/
My final version will be to make the theremin control midi sounds.