PDA

View Full Version : stepper motor switching sequence



sanju2008
05-26-2008, 05:42 PM
Hello


i am trying to build a counter using stepper motor picked out of a floppy drive. it's a bipolar motor. now
when i give stepping sequnce for full steps it works fine giving me about 18 degree/ step. the sequence as follows

1a 1b 2a 2b
1 0 0 0
0 0 1 0
0 1 0 0
0 0 0 1


or

1a 1b 2a 2b
1 0 1 0
0 1 1 0
0 1 0 1
1 0 0 1



but if i have to do half step (which means i am supposed get 9 deg/step) i get only 12 deg/step using the following sequence.


1a 1b 2a 2b
1 0 0 0
1 0 1 0
0 0 1 0
0 1 1 0
0 1 0 0
0 1 0 1
0 0 0 1
1 0 0 1


can anybody help?