Re: How to get a signal to controll spindle speed?

[Ray Henry <rehenry-at-up.net>]

List

I've got to say that I find this thread fascinating.  Nice creative solutions 
to getting some kind of analog signal out of a parport.  How would we close 
the loop by getting spindle or laser intensity back into the emc without 
using a full servo board solution?

Ray

On Saturday 18 May 2002 06:25, you wrote:
> On Friday 17 May 2002 15:36, you wrote:
> > Hi list,
> > Can anyone tell me how typically a mill with
> > controllable spindle speed out the emc is being set
> > up? I want somehow a possibility to controll
> > laserpower by the emc software. I think I could use
> > the "spindle speed" command for this purpose.
>
> you could use a simple  555 timer with an electronic variable resistor
> these usually have up/down logic inputs which 'move' the wiper tap
> and are very cheap & cheerful ,