Callahan's 4 th grade class just finished a unit on Magnetism and Electricity .For Callahan's final project he was required to build something using magnetsand/or electricity. Many kids did the old standby, a light bulb attached to a switch. While there were some great ideas, Callahan stole the show. On his own he took the XBOX controller apart and removed the motor. He then used a soldering iron to attach the wires to a Lithium 3 volt single cell battery which was placed on the head of a cross bristle Colgate toothbrush. The vibration cause the bristles to drive across the table. When it tipped over he added Legos to either side to act as weights to stabilize . His class was in awe and his teacher just thrilled! Click on picture to enlarge. Video clip coming soon
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