Robotic Arm

Robotic arms, aptly named because they resemble a human arm, are typically mounted to a base. The arm contains multiple joints that act as axes that enable a degree of movement. The higher number of rotary joints a robotic arm features, the more freedom of movement it has.A computer controls the robotic arm by rotating the step motors connected to individual joints. The larger robotic arms use pneumatics or hydraulics. As the step motors move in increments, the computer can move the arm precisely and perform the same movement repetitively.