Stepper motors are electric motors that move in discrete steps, rather than continuously like a regular electric motor. They are often used in precision motion control applications, such as 3D printing, where precise movements are required.

Stepper motors have a series of electromagnets arranged around a central gear, and by activating these electromagnets in a specific sequence, the motor can be made to rotate a precise number of degrees. Stepper motors are typically controlled using a driver circuit, which sends the appropriate voltage and current to the motor to cause it to rotate.

One of the advantages of stepper motors is that they can be controlled very precisely, since the number of steps that the motor takes can be easily controlled. They are also relatively simple to operate and maintain, making them a popular choice for many different types of applications.