How it Works: The Science Behind the Magic Way back in the early 1920s, when Léon Theremin worked at the Physico-Technical Institute in St. Petersburg, Russia, he noticed that when he moved his body in or out of an electromagnetic field produced by a radio frequency oscillating circuit, he changed its frequency [source: Harrison]. The […]
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This is an all-digital-hardware Theremin. The Digital IR Theremin uses comparators, digital logic and a single 555 timer for tone generation to make it so that when you wave your hand in front of the infrared proximity sensor, it outputs a tone with varying pitch depending on how far away your hand is from the sensor! Digital IR Theremin – [ Link ] Mini IR Theremin Long Range (10m) IR Beam Break Detector Human Theremin Halloween Costume Squaremin – Theremin Style Instrument The 555 SliderSynth
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