Re: [CAD_CAM_EDM_DRO] Re: Allegro 3977SED questions

Sorry, I must've misunderstood what you were trying to acheive. If you are
looking for something that can be put together quickly and drive a
1.7-2.0Amotor at 20-30 volts, then 3977 is a great choice. Simple
board design, few
external components - it is great. I tried it, and I liked it in general. I
just had a hard time finding stepper motors that did not want 4-5A... And
much higher voltage... Maybe my ebaying kung-fu skills are subpar :) So,
that started me down the road to designing something that could drive the
motors that I bought, and the experience was just as much fun as converting
the mill to CNC in the first place. Since I am no electronics expert either,
it did take a looong time (still learning). I thought you were trying to do
the same.

Good luck on your project!

Vlad

On 12/22/05, lomcevaktumble <lomcevaktumble@...> wrote:
>
> Vlad -
> The 3977 seems to fit what I need it to do pretty well. The
> steppers I'm looking at are in the 1.7 - 2.0 Amp range. The machine
> I'll be building won't need very heavy stepper motors.
> I picked the 3977 because it was recommended and its seems pretty
> simple. I'm not an expert with electronics and I need something that
> can be slapped together by me. I also need something fairly quickly.
> Do you have any recommendations for something that might fit those
> parameters? I'm always open to looking at something else. And of
> course if I ever build a machine that needs more powerful motors
> I'll have to leave the 3977 chip for something else.
>
> Thanks for all the tips and info everybody.
>
> Michael
>

--
Vlad's shop
http://www.krupin.net/serendipity/index.php?/categories/2-metalworking


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