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How-To:  Motion-activated Tesla coil

Devin just submitted this video to our Make: Halloween Contest 2009. It’s a Tesla coil activated by a relay controlled by a microcontroller with a motion sensor. As Devin says, the coil is “very loud and startling,” and he intends to use it in a haunted house. He’s written an Instructable, too. Zap!

Make: Halloween Contest 2009

Microchip Technology Inc. and MAKE have teamed up to present to you the Make: Halloween Contest 2009! Show us your embedded microcontroller Halloween projects and you could be chosen as a winner.


I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and My work has also appeared in ReadyMade, c't – Magazin für Computertechnik, and The Wall Street Journal.

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