Re: [CAD_CAM_EDM_DRO] Re: Worry, servo back powering Gecko

Gentlemen,

Qui Stack has panel encoders for about $20 each. Someone else have their
web site id?

Tom Eldredge

----- Original Message -----
From: Alan Marconett KM6VV <KM6VV@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, July 18, 2001 12:57 PM
Subject: [CAD_CAM_EDM_DRO] Re: Worry, servo back powering Gecko


> Hi Tom, List,
>
> Nice idea! A little big, but it could work. Panel shaft encoders are
> also cheap, and work quite nice. Easy task to read them in through two
> bits (digital) of a joystick port, and use the other two bits for "bump
> switches" (a value in a parameter is "bumped" each time the button is
> pressed, and rolls over). Put them all in a small die cast box, and you
> have a convenient pendent.
>
> Alan KM6VV
>
> thscarince@... wrote:
> >
> > Along similar lines, how about using a stepper simply as an encoder?
> >
> > While I wouldn't depend on one for servo feedback, that small useless
> > ex-disk-drive stepper might make a very nice handwheel encoder for
> > manual jogging. Just like the bigtime commercial machines have. The
> > neat part is you get a built in "detent" feel from the stepper!
> >
> > BTW, the commercially available (and very expen$ive) handwheel
> > encoders often use what they call a "magnetic detent" instead of a
> > mechanical one that will eventually wear out.
> >
> > Just a thought (came to me in a dream),
> > Tom Scarince
> >
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