About this 3D model

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 2560 still 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")