There are many kinds of stepper motors, the most often the NEMA 17 size Hybrid stepper motor are used for 3D Printing    http://en.wikipedia.org/wiki/Stepper_motor http://reprap.org/wiki/NEMA_Motor http://www.tigoe.net/pcomp/code/circuits/motors/stepper-motors/ http://pcbheaven.com/wikipages/How_Stepper_Motors_Work/ To get a better insight how steppermotors are driven with the arduino you could have a look at the bildr.blog guide to the EasyDriver board http://bildr.org/2011/06/easydriver/ or at this guide http://lusorobotica.com/index.php/topic,106.0.html (in Spanish) |