Re: Encoder circuits for parallel port hookup?

Check the files section and circuits and for a single chip solution.


74HC04, pwr cource is from the encoder power and all it does in fit
on a cable.

Not sure if it is perfect, but it sure looks neat !

Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Abby Katt" <cnc@a...> wrote:
>
> > 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
>
>
>
>
>