>
> Hi all,
>
> I want to do some experiment with step motors but
> I want to use as little hardware as
> possible.
>
> Does anybody know where I can get some small step
> motors that can be driven from directly a PIC?
>
> Thank you.
>
> Francesco
>
I would suggest using some type of driver chip.  The PIC
will not be able to supply enough current to drive a
stepper directly.  If you are using a bipolar stepper,
then the Motorola MC3479 is a nice chip.  It has 350mA
per coil drive capability.  It is simple to use--one
direction bit and one step bit is all it takes (you
can also do half-stepping by using one more bit).  It
is available as a 16-pin DIP or a 20-pin PLCC.

Keith

Keith D. Kotay
Ph.D. Candidate
Dartmouth College
kotay@cs.dartmouth.edu
http://www.cs.dartmouth.edu/~kotay