This is a hand I designed for a mechatronics class. Each finger has a servo for control for one degree of freedom, and the thumb has an additional servo in the palm to make it opposable with two degrees of freedom. All the other servos are located in the arm portion and a fishing line is used to pull the fingers closed. There is elastic on the back to pull the fingers open when the fishing line is unwound. The arm is controlled by an Arduino MEGA that communicates with a raspberry pi over serial USB, which sends information about the motion of the player’s hand. The game consists of three rounds. The raspberry pi can determine what hand the person played and sends that information to the Arduino to keep track of the score. After three rounds, the winner is announced on the LCD screen.