Re: 555 step generator

check out the files section. there are a few different varities of
step and direction circuits.

Dave



--- In CAD_CAM_EDM_DRO@yahoogroups.com, Alan Marconett KM6VV
<KM6VV@a...> wrote:

> Hi Chris,
>
> I posted a 555 pulse generator circuit in files 555 drive 2:
>
>

http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/555drive2.
jpg

>
> It was used to drive the three axis of a computer driven water

phantom

> (Xrays) in manual mode, hence the 6 switches. Calls for 15V, but

the

> 12V Zener parts could be pulled out.
>
> It does a little ramp-up, but no ramp-down :>(
>
> I used it along with PB's to try out and early robot, and currently

to

> move axis.
>
> HTH
>
> Alan KM6VV
>
>
> Chris Brick wrote:
> >
> > Does anyone have a simple 555 timer based step generator circuit

handy?

> >
> > I'd like to have a way to test stepper controllers/motors without

having

> > to connect up to my machine setup. I'm also planning to build a

stepper

> > based polishing rig and will need to be able to set the step rate

and

> > walk away.
> >
> > Thanks,
> >
> > Chris
> >
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