Controlling Stepper Motor with a Parallel Port

Posted on Aug 22, 2012

This is an easy to build stepper motor driver that will allow you to precisely control a unipolar stepper motor through your computer`s parallel port. With a stepper motor you can build a lot of interesting gadgets such as robots, elevator, PCB drilling mill, camera panning system, automatic fish feeder, etc. If you have never worked with stepper motors before you will surely have a lot of fun with this project.

Controlling Stepper Motor with a Parallel Port
Click here to download the full size of the above Circuit.

Stepper motors are very different from a regular DC motors. Instead of spinning like DC motors do, stepper motor steps at a specific resolution for each pulse. The motor that we are using needs 48 steps / pulses just to complete a single revolution! That

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