I've made a ROBOTIC ARM in autocad, it can move in any direction, rotate on itself and it has an hand to pick up and move objects.It is moved by five Futaba servos (futaba S3003), and I think it would be nice to interface them with an Arduino or a computer...
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Imported from Thingiverse: https://www.thingiverse.com/thing:2902
Original creator: Pieppo