Rozendal 3340 VCO

DIY 3340-based VCO

My own minor remix of Timo Rozendal's excellent take on a 3340 VCO.

This takes a SMD 3340 chip - in my case, the AS3340 from LV - and builds out what is largely Timo and the datasheet's circuit. Rather than using both edges of hard sync, this oscillator only offers a single 'hard' sync input (which is the 3340's own idiosyncratic take on hard sync); the freed space on the front panel is used as the output for a sine shaper I added to the circuit - which works really well.

This isn't available. It's just a thing I built a handful of for myself.