Re: good stepper driver

Thanks a lot for the help! those white papers have tons of info. I
was hoping not to have to buy a driver board, i'd much rather build
one. I have most of the power transistors from the old dot-matrix
printers i got the motors from, and i also have some of these
http://www.fairchildsemi.com/pf/IS/ISL9N303AP3.html
i was thinking, if i could build that origional board i posted a link
to, and then i used just used the transistors from the printers, and
those others i have to drive the motors, wouldn't that work fine for a
PCB mill?

> Hi Adam,
>
> Read the white paper at Geckodrive.com about power supplies. it also
> goes over some of the details on motor voltages.
>
> Another good read is Jones on steppers. that can be found via google.
>
> The interface board is simple, but seems to be linked to the
> drivers. 3 for $34 each for the cheap ones, or $99 for the expensive
> ones.
>
> There are better deals around.
>
> HobbyCNC and Xylotex both offer microstepping.
>
> Actually, the $34 is marked down to half price. at less than $20, it
> is still not a great deal (HobbyCNC is only slightly more $$) but the
> very small motors don't need much for a driver.
>
> For a small plotter or maybe a PCB drilling machine, the motors would
> probably work fine.
>
> Dave