Light Drums

I wanted to better understand...

the technology around me, so I began to teach myself analog circuitry. The main result of this tinkering was a drum set that lit up when played. In addition, I designed and built a series of analog synthesizers that interfaced with the light drums. 

10 step analog sequencer that interfaces with the drums.

Schematic detailing the analog amplifying and filtering of the input signal and control of the LED. 

A little demo.