Re: [CAD_CAM_EDM_DRO] Re: Re: digitizer debouncing

Jon,

My first crack at digitizing was with a micro switch mounted to a .25"
rod in the Sherline's collet. switch connects to pin 31 and ground
(MaxNC pinouts). Attach a 1K pull-up resistor (.1w) between +5v and pin
31. No schmitt triggers yet. Just read the printer status port, and
look at the SLCT line. As that piece of code need only FIND a "LOW"
once for a "SENSE", it's all we need. If someone has 3 switches to "OR"
together, then might as well add some conditioning.

Alan KM6VV


Jon Anderson wrote:

>
> ballendo@... wrote:
>
> > I know what i'm about to say is 'arthroscopic' as well, but debounce
> > in s/w is easy and effective.
>
> Not for a non-programmer. For me, it would be a decent project to write
> a probing routine in Ahha's macro language. If Alan goes through with
> his software, that would be a good place to do it. For me, it's gotta be
> a simple and easy bench project.
>
> Jon