How many wires does the motor have ? I sorted the drive waves out for 3-wire/3 coil Conner et al low-profile HDD motors (STC, Sankyo etc) a couple of weeks ago and have them running, using the HDD PCB components, anywhere from 5 to 55 revs/sec -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu