http://a.parsons.edu/~owofford/misterresistor/ohalInstrument.mov
this is a short video demonstrating the tweaking and beeping capabilities of my hand made instrument. the oscillators are gated and the chain reaction is triggered by light. the pitch is higher when there is a lot of light and vice versa. i also added two potentiometers (one for volume) but one day they started behaving rather erratically so its hard to define what they do exactly.
this post is a follow-up to this one:
http://www.doot.com/resistor07/?p=146