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Pete Prodoehl needed a button. A button with a USB connection that would emulate a single keypress. He’s built two now. They’re dead simple: a Teensy USB development board, a cable, a button, and a lovely die-cast aluminum enclosure from Mammoth Electronics. I have no particular need for such a button, but this photo is making me itch to build one of my own.


Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.



  1. The next one I’m working on has… wait for it… two buttons! :)

  2. I made a 1-key-keyboard project a few years ago, which has the same dead-simple functionality as this project, but at a very low cost (about 5-6 times cheaper than a Teensy)  -

    oh, and I also made a 4-key version :-)

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