Step Motor Controller


Posted on Jun 23, 2012

This application note describes how to implement a compact size and high-speed interrupt driven step motor controller. Step motors are typically used in applications like camera zoom/film feeder, fax machines, printers, copying machines, paper feeders/ sorters and disk drives. The high performance of the AVR controller enables the designer to implement high speed step motor applications with low computing requirements of the controller.



A DC step motor translates current pulses into motor rotation. A typical motor contains four winding coils. The coils are often labeled red, yellow/white, red/white and yellow, but may have other colors. Applying voltage to these coils forces the motor




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