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Electronics >> Schematics Depot >> IR/Ultrasonic >> 555 Timer 40khz Oscillator
parts:
This circuit oscillates two infrared LED's at 40 khz. To make sure it is transmitting IR light, you can get a little tool from radio shack for about $5. It is a small sheet of plastic about 1" by 3" with a special strip of material, that when exposed to IR light glows (it's actually kinda cool..) A way to check for 40khz IR light is to build a circuit that lights an led when 40khz light is detected. You can get the schematic by clicking here.Return to: Schematics Depot, or IR/Ultrasonic Circuits |
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