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The Best of Instructables Volume I by The editors at MAKE magazine and Instructables.com

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Ultra TV-B-Gone

Turn off a TV in style By Jacob McKenzie

This TV-B-Gone uses a 9V battery to send its signal through a matrix of 20 infrared (IR) LEDS. This extends the working range of the device to about 90 feet (line of sight). Using this in a regular-sized room, you are pretty much guaranteed to zap the TV no matter where you point it.

image

Figure A: The Ultra TV-B-Gone.

1. Get the stuff

You won’t need much to build this; here is a list of the materials shown in Figure B.

image TV-B-Gone (keychain version)

one 2N3904 Transistor (if you have any transistors ...

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