I Biocowed an mp3 player and connected it to the arduino. When I walk in the house, a motion sensor is activated and the mp3 player plays a welcome home song. Biocow's original post is here, with a slightly different mp3 player: First project: Motion activated random mp3 player - #2 by system - Aud…

Hacked mp3 player (basically an $8 waveshield)

system March 28, 2011, 6:41pm 12

What voltage does the mp3 player use through these switches?

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