I got some nice steppers and driver/controllers from an old printer. Most of the motors were 6 wire and worked fine Easydriver (after identifying correct pair of leads). Still, there were significant number of unipolar drivers/controllers and found out that at least some of the 6 wire steppers were actually unipolar. Here is one: http://qzwellrich.en.alibaba.com/product/1770394445-221076559/Stitch_density_stepping_motor_42D2077.html. Please advice:
1) is there a way to differentiate unipolar and bipolar 6 wire motors without a spec sheets? 2) is there an advantage of running unipolar stepper by unipolar driver/controller (as opposed to running it as bipolar)? It would be ideal if I could reuse some of these drivers/controllers. thanks.
P.S. The driver is STK672-110 - Unipolar Fixed-Current Chopper.
P.S. I am using these to build a small CNC, eventually, but right now just trying to get a hang of it. thanks.