3 Oct
2006
3 Oct
'06
1:18 a.m.
hi again,
on a quick note, the sequence for using unipolar 4 coils steppers is:
A B C D coils A - D 1 0 0 0 step1 0 1 0 0 step2 0 0 1 0 step3 0 0 0 1 step4
this is the full step sequence. you can do half-steps as well, practically doubling the number of steps per revolution:
A B C D coils A - D 1 0 0 0 step1a 1 1 0 0 step1b 0 1 0 0 step2a 0 1 1 0 step2b 0 0 1 0 step3a 0 0 1 1 step3b 0 0 0 1 step4a 1 0 0 1 step4b
to make it turn continously, repeat the sequence. to change direction, step from 4 to 1 ....
if you want to use bipolar stepper motors, you need an extra h-bridge driver, so that the polarity of the coil driving voltage can be changed.
greets,
chris