Good intro on driving big steppers with Arduino

Nice video on how to drive a big stepper with an arduino and a micro step driver.

http://makezine.com/video/driving-big-stepper-motors-with-arduino/?utm_source=feedburner&utm_medium=%24%7Bfeed%7D&utm_campaign=Feed%3A+%24%7Bmakezineonline%7D+%28%24%7BMAKE%7D%29&utm_content=%24%7BGoogleReader%7D