This instructable shows the process of building a robotic arm using servos, Arduino microprocessor, a gyroscope and multiple bend sensors.
The user wears a glove containing the gyroscope and bend sensors which translate the movement of the users hand into motion of the servos , in turn rotating the wrist and hand of the robotic arm.
The forearm has full motion of a human wrist namely: rotation, radial deviation (movement towards the thumb) ,ulnar deviation (movement towards the little finger) ,flexion (tilting towards the palm) and extension (tilting towards the back of the hand).
The Hand also has movement of the fingers, this is limited as a result of the brittle material used.
All movement is provided by the Servos attached to an extension wire or piano wire. Each having different torque depending on its position.
The fingers contain touch sensitive resistors which provide haptic feedback and allow the user to know when the fingers have grasped an object.