Sphero's R2-D2 toy

Taking the R2-D2 toy apart is a lot like disassembling a car engine -- get the sequence right and R2 comes apart pretty readily. Among the things we found inside are two motor control ICs, novel mechanical mechanisms for operating the foot and making R2 rock side to side, and four motors - one for rotating the turret, one powering the track drive in each arm, and a fourth that moves the foot in and out.
You can learn how to use the app for the droid here: • Spero's R2-D2 toy -- H...
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