Optical Theremin

Michael sent us over one of this custom built Optical Theremins. He calls it “Beep-it. We used it live during The Synth Eastwood Band’s live set.

In Michael’s own words:
“Beep-it is an optical theremin. It outputs a square wave whose pitch is controlled by the amount of light striking a photoresistor. You control the pitch by casting shadows over the light sensor, or by pointing it towards/away from a light source. Flashing lights induce an interesting oscillating effect. A single momentary button turns Beep-it on or off.

There is an 1/4″ output jack for connecting to audio equipment like amplifiers, guitar pedals, recording, etc.”