4M KidzRobotix DIY set Motorised Robot Hand

The operation of the Motorised Robot Hand is quite simple. When the switch is turned on, electric current flows to the motor, making it spin. The gears in the gearbox slow the speed of the motor down so that the drum turns slowly. There is a mechanism called a ratchet in the gearbox. It allows the motor to keep turning if the drum becomes jammed. This protects the gears and motor. Each finger is a lever. When a peg presses down on one end, the tip of the finger is lifted.