Re: [CAD_CAM_EDM_DRO] XY joystick jogging

Brian,

That is pretty clever, I'd say. Thanks for explaining it. I will have to
try it out. I guess you could run two of these on one gameport, using all
four digital inputs. Hmmm.

Tom E.

----- Original Message -----
From: Brian Pitt <bfp@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, April 04, 2001 2:25 PM
Subject: Re: [CAD_CAM_EDM_DRO] XY joystick jogging


> On Wednesday 04 April 2001 07:29, you wrote:
> > How do you use the game port for a shaft encoder? Please give a little
> > more detail. I can't picture this.
> >
> > Tom
>
> if you take a joystick/gamepad and work the buttons like so
> push&hold button1
> push&hold button2
> release button1
> release button2
> youve just walked it thru one quadriture cycle (4 states/counts)
>
> you could do the same thing with 2 roller lever microswitches and
> a 25 tooth timing belt pulley as the encoder weel to get 100 states/
> counts/rev and 100 detent positions/rev
>
> add a little bit of code to read the bits on the game port in the
> CNC programs jog mode and you have a jog handweel
>
> Brian
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Manager
>
> FAQ: http://www.ktmarketing.com/faq.html
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>