Build an infrared pen

Build an infrared pen

How to build an infrared pen This video is a detailed description of how to make an IR pen. It even shows a diagram and how it works!

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How to build an infrared pen

Electronics • Hacks, Mods & Circuitry

This video is a detailed description of how to make an IR pen. It even shows a diagram and how it works!

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Average Grade B+
Length 3:42
Views 4098
Format Flash
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Curated 7 months ago by Amie
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+1
ordosingularis 7 months ago
a resistor should be placed in series. Without a resistor, the only limit to the current is the battery's output, which will surely burn out the LED.
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ordosingularis 7 months ago
also, if you use an IR LED and not a visible light LED, you risk SERIOUS injury to your eye.
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kasted 4 months ago
if you have a hard time making this pen - you can buy one from this site: http://infraredpens.com/
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