$10 Arduino beatbox uses capacitive sensors for buttons

Arduino Technology

Alan Stein built this $10 Arduino beatbox for his first Arduino project. Requiring just three resistors and a piezo speaker (in addition to the really bare bones board he is using), it uses capacitive sensors instead of expensive buttons to keep the cost down. He also has a nice comparison of the Arduino to his longstanding favorite, the PICAXE. Source code and schematics are available at his website.

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