555 LCO & JavaScript Get Freaky Now

Perhaps the cheapest and easiest baseline synthesizer ever made from a light controlled oscillator driven by the brightness of a laptop screen. A sequencer written in JavaScript varies the brightness of the patch, controlling the pitch of the synthesizer. Though its not included here the light controlled resonant filter I built in previous post could be added to this circuit for next time! At a decimal fraction of the cost of a x0xb0x or TB-303, this open source hack could put transistorized bassline goodness in the hands of anyone with a hand-full of Radioshack parts.”