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5volt.eu - 1/4/2009

A simple light to sound converter - with video !

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This a simple circuit I designed and built to convert light variations into sound. It is fun to listen to the weird sound emitted by the light of remote controls, light bulbs, TV screens and any light source. The circuit is very simple and is based and pretty well known building blocks : a pin ...

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Light to sound converter
Hack a Day — ... [Alex] built what he calls a light to sound converter. It reacts differently depending on the type of light: remote controls, light bulbs, TV screens, etc. A photodiode is used with an amplifier to pick up the light change. That signal is dumped through a dual opamp. He swapped in several different types of photodiodes and settled on the BPW34 intended for visible light. He’ll be incorporating this into a much larger project. ...

Light to sound converter circuit
MAKE Magazine — From the MAKE: Flickr pool 5Volt shares info, schematic and video on this simple yet fun/interesting project - This is my simple light to sound converter. It simply converts light variations into sound. Listen to remote controls, TVs, burning flames, light bulbs and anything that emits either visible or infrared light. Get more details on how to build your own from his blog - Light to sound converter Read more | Permalink | Comments | Read more ...