Re: [CAD_CAM_EDM_DRO) 555 Timer circuit Request

Hi Rich, others,

Yup! Use a big cap and resistor to give an r/c time constant to the
frequency of the 555. I know, I know find the schematic!

Alan KM6VV

"Rich D." wrote:

>
> Bill & all,
> There must be ramping for steppers. Even changing the speed abruptly will stall
> a motor.
> Rich D.
>
> wanliker@... wrote:
> >
> > In a message dated 5/21/01 4:37:57 PM Mountain Daylight Time, KM6VV@...
> > writes:
> >
> > << Just connect up a 555 timer, and you'll get the
> > pulses! >>
> >
> > How about one of our good electronic types designing and putting in the Files
> > circuit a good schematic for a 555 Timer circuit for single axis
> > testing/operation.
> >
> > Desired features:
> > Single step
> > 0 to ?? Pulses per minute.
> > Direction reversing.
> > Ability to add limit switch's.
> > What else????
> >
> > Thanks,
> > bill
> > List Mom