Meet the MechaHand: a robotic arm designed to mimic movements of your hand. It is able to grab objects and perform various moves using its fingers. The robot is driven by the ATmega2560 microcontroller. It supports wrist joint rotation of 0 to 180 degrees. The hand features 3 finger joints.
More gadgets like this: here
MechaHand – robotic arm controlled by healthy limb
Such a solution is much cheaper than beBionic, iLimb, and other advanced prosthetic arms. More info is available here.
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