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