> If it's not an stepper motor it is very well disguised :-)
>
> The motor does turns clockwise, counterclockwise, I can change its
> speed, etc... and I have done all the pic programming assuming
> that IT IS a stepper motor. Thus, I understand that there is only
> one problem : my ignorance (which, BTW is being incrementally reduced
> by means of the comments and suggestions in this list).

Do you have any evidence that this is not a brushless DC motor?  That would
be more likely if it turned the disk drive spindle.  If it moved the heads
then it is more likely a stepper.


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olin@embedinc.com, http://www.embedinc.com

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