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Optical Theremin

Optical Theremin - Main image
$21.89 $29.99 In stock

Optical Theremin



Craft your own musical instrument and harness the power of light!



• Wave your hand to create unique sounds


• Learn about potentiometers and light-dependent resistors


• Explore the intersection of science and music


• Perfect for budding musicians and electronics enthusiasts



Unleash your creativity with this hands-on project!

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Abigail ★★★★★

I was blown away by how the light-dependent resistor actually changes the pitch—my kid spent an hour just watching the sound shift with every hand movement. It’s a perfect hands-on way to learn about electronics while making real music.

Ella P. ★★★★★

My kid was thrilled to finally build something that actually makes music, and the light-dependent resistor really makes it feel like magic. Tuning the potentiometer was a neat way to learn how circuits control pitch.

Thomas A. ★★★★★

The light-dependent resistor is so responsive that even a slow hand wave shifts the pitch dramatically—my kids and I spent the whole evening building one and then arguing over who got to play it next. Soldering the potentiometer was a great refresher on basic circuits too.