How to vactrol

Look around the synth DIY world and before long you’re likely to find a circuit containing something like this: This is an attempt to give voltage control to a circuit, using a vactrol. A vactrol is a light source (classically a little neon or incandescant light, but these days an LED) and a photoresistor butted […]

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Compensating for a crapload of 0805 SMD in my future with a couple big fat vactrols just for giggles, because I’ve never played with vactrols before.