Re: [CAD_CAM_EDM_DRO] Re: [CAD_CAM_EDM_DRO) 555 Timer circuit Request

Hi Bill, Rich,

Rich is right, ramping is needed. My circuit will do that!

And back to Bill's limit switch question, IMO, that circuit should be
CLOSE to the driver circuitry (better to not rely on the controller
(program/computer). My old stepper stuff does it that way, I just saw
last night. I'll add it to the logic for the Gecko's on my new driver
box.

Alan KM6VV

wanliker@... wrote:

>
> In a message dated 5/21/01 10:36:10 PM Mountain Daylight Time, KM6VV@...
> writes:
>
> << There must be ramping for steppers. Even changing the speed abruptly will
> stall
> > a motor.
> > Rich D. >>
>
> If used for testing a stepper for movement or using it for a manual drive, is
> this going to be a factor? I was thinking that this is one thing that is
> missing for someone that wants to test or drive a stepper but is not set up
> with a computer program to feed the signals.
> bill
>