Re: Encoder circuits for parallel port hookup?

> Yes, if its mechanical then debounce can be the problem. Normally,

encoders

> are not debounced as it will
> cause lost pulses. A small cap acrosss the line can help as well as

a 10K

> resistor to ground on each line.

Hmmm... maybe I need to change my wiring then, too.
At the moment I have Gnd going to the common terminal, and the two
outputs going to the parallel port pins. I'm assuming in order to use
the filter, I'd need to use positive to the common, then put the
filters to ground respectively.

If I was using positive instead, would I need a resistor before the
common terminal?

Thanks (you rock)
~Abby

> Thanks,
> Art
> www.artofcnc.ca
> ----- Original Message -----
> From: "AbbyKatt" <cnc@a...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Thursday, February 24, 2005 7:18 PM
> Subject: RE: [CAD_CAM_EDM_DRO] Re: Encoder circuits for parallel port
> hookup?
>
>
> >
> > Thanks for the response Art!
> >
> > Hmmm.. I ended up getting some pretty cheap mechanical encoders, and
> > just used some gearing to increase the res... But I seem to be

getting a

> > problem with this. I'm guessing there may be some bouncing of the
> > signal? I'm using Mach2 (will use Mach3, so I can do both X/Y soon)..
> > .com/news_servers.html
> >