Re: digitizer debouncing

--- In CAD_CAM_EDM_DRO@egroups.com, Jon Anderson <janders@n...> wrote:

> ballendo@y... 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

I would suggest some type of electrical debouncing,
like the 555 timer chip i mentioned. It only costs
a few cents for the extra parts.

A mechanical switch this sensitive will jitter
and create micro arcing, and should NOT be
coupled straight into a logic input. It's not
a proper high-speed silver contact switch,
remember?

At the very least it will need a cap or something
across the contacts, but that can encourage
arcing in some instances. Simple electrical
de-bounce, then put it into your parallel port
or other logic input. When you are going to
a number of hours on the mech construction why
not do the job properly and make a nice
reliable product? :o)
-Roman