Screws onto bottom of arduino and attaches 9V battery. useful for anything that should be self-powered. fits UNO, UNO SMD, Duemilanove, Diecimila, NG, most "full-size" clones, MEGA, MEGA 2560still need to make screw holes bigger, but it should work right now if you drill them out to be the same size as the arduino (1/8")
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Imported from Thingiverse: https://www.thingiverse.com/thing:16016
Original creator: g_rocket