Control Stepper Motor with Arduino and A4988 Driver | How to Control Stepper Motors with Arduino. 

A stepper motor is a motor that moves in fixed increments, called steps, in response to digital pulses, allowing precise control of position and speed. It is widely used in applications requiring precise positioning and movement, such as 3D printers, CNC machines, and robotics.
This video describes how to use Arduino to control the speed and direction of a stepper motor.