Re: [CAD_CAM_EDM_DRO] 555 step generator

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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