BitBanger Synth Output by jonnay published on 2012/06/26 04:35:59 +0000 Don't get too excited, this is just a sample of a Digital/Analog synthesizer I am building. A 3 bit digital VCO driven from an Arduino digital out pins with an R2R ladder. The Envelope is literally a switch wired up to an RC network, and the VCA is variation on the TR 808 swing VCA. There is some low frequency noise that needs to be filtered, and the envelope needs to not be a simple switch. I am literally toggling it on and off. This is a starting point, not a finish.