Stepper motor controller

Stepper motors have long been successfully used in a wide variety of devices. They can be found in disk drives, printers, plotters, scanners, fax machines, as well as a variety of industrial and special equipment. Currently available are many different types of stepper motors for all occasions. However, to choose the right type of engine - it's a half-case. It is equally important to choose the right driver circuit and the algorithm of its work, which is often determined by the program of the microcontroller. The purpose of this article - to systematize information about your stepper motor, how to manage them, driver circuits and algorithms. As an example, the practical realization of simple and cheap stepper motor driver based microcontroller family AVR.