Stepper Motor Basics - Demo with just Push Buttons!

http://en.wikipedia.org/wiki/Stepper_...
Skip to around 10:00 for the switch demo
In this quick n dirty video on stepper motors I explain the difference between unipolar and bipolar stepper motors and even control one using only pushbuttons.  This helps to visualize the sequencing needed to rotate the shaft in either direction.  I also demonstrate full-step vs half-step control.    
 
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