Re: [CAD_CAM_EDM_DRO] 555 step generator

Hi Chris,

My pleasure!

Alan KM6VV

Chris Brick wrote:

>
> > The R/C timing circuit of a 555 can include a pot. One thing that I do
> > is use a waveform generator, and set the duty cycle of a square wave to
> > resemble that of a controller program. But why not just generate
> > "moves" with a controller program on a PC? TurboCNC would probably fit
> > the bill.
>
> I could do that if it were going to be in my shop but the polisher is
> going in a lab and should take up a minimum of space and be simple to
> run.
>
> > No point trying to build a very elaborate "test box" out of a 555 timer
> > chip. Design a test box using a PIC. Pot, A/D converter, and a little
> > code.
>
> Now that's a good idea, don't know why it didn't cross my mind. I've
> got everything I need to do that. This will allow me to put a timer in
> the circuit as well so I can shut down the polisher and then the stepper
> when someone leaves it on for a week.
>
> Thanks for the tip, Alan.
>
> Chris