Pro-Arm RS 2200 is a 6-joint, 5 degrees of freedom robot arm. It is designed to simulate industrial robot operations for laboratory or classroom training and education research. It is a joint-coordinate type robot. It is so named because its movements resemble that of human joints. It has six axes, and each axis imitates the movement of one of the humanís mobility. Mechanics of the Robot ArmThe robot consists of 6 stepping motors that move the six joints.