Tvbgonetest
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I just made a bunch of the TV-B-Gone kits, one quick test you can do when you make these kits is to press the button and shine the IR LEDs at a web cam, it will show up as a nice purpley color and you know you’re device is working if you don’t happen to have a TV (I don’t). Most CCD or CMOS detectors will show infrared light when you point a TV remote at it, more so if it’s a high powered version.

TV-B-Gone high powered kit @ the Maker store – Link.