A stepper motor driver is a device that converts pulse signals into angular displacement, controlling the rotation of stepper motors. When the driver receives a pulse signal, it rotates the motor by a specified step angle in the desired direction. The motor’s speed is determined by the pulse frequency from the controller, and its displacement is dictated by the number of pulses. A stepper system, comprising a stepper motor and a driver, relies on both components for optimal performance. Thus, the driver’s quality is as crucial as the motor’s in determining the system’s overall performance.