Beep-it Optical Theremin

Regular price $ 55.00

Beep-it is an analog optical theremin, which is to say it's a simple electronic musical instrument that responds to light.

There is a video demonstrating what Beep-it sounds like and can do here:

That is an older version of Beep-it that was made of plastic. This one is made of wood and is much nicer.

By using your hands to cast shadows over Beep-it or waving it around near a light source, one can generate a wide range of pitches. Careful manipulation can invoke a wide range of unique sounds. Interesting rhythmic effects can be achieved by using a flashing light to modulate the sound. It's pretty fun and expressive to play with, and kids love it.


Beep-it is handmade and assembled in Chicago. I solder the circuits together by hand, cut, sand, & stain the wood cases, put it all together and ship them out. It's pretty fun and I enjoy it. Please allow 2-3 weeks for shipping.

Each one is handmade, so there will be variations in wood grain and finishing.

Beep-it uses a replaceable 9v battery for power, and has a 1/4" jack for plugging into guitar effects pedals, recording devices, or loudspeakers, but it also has a built-in speaker for playing all on its own.

Please contact me with any questions, I'm happy to answer.