On Tuesday 15 July 2014 10:03:52 Ed Nisley did opine
And Gene did reply:
> > I M does not shows any working sample
> 
> Here's how I did it for my little Sherline mill...
> 
> Modify the Sherline control box to accept the wiring. This is an
> example for the tool length probe line, but the same thing happened
> for the home switch input:
> 
> http://softsolder.com/2010/04/11/sherline-tool-length-probe-adding-a-ja
> ck/
> 
> Connect the physical home switches to the parallel port pin and define
> the HAL "wiring" that connects the input pin to the homing signals:
> 
> http://softsolder.com/2010/05/11/sherline-cnc-mill-adding-home-switches
> /
> 
> Define the homing parameters that control the motion on all three axes:
> 
> http://softsolder.com/2010/05/12/sherline-cnc-mill-defining-home-switch
> es/
> 
> That configuration worked back in the 2.4 days and has continued to
> work fine ever since, so it should get you reasonably close to your
> goal.
> 
> Hope that helps ...

It gets more complex than that Ed, he is using Mesa cards where the GPIO 
port pin number isn't generally the number you use in the hal file for a 
parport number.  I needed a spindle run/brake signal on the db25's pin 17, 
but had to consult the dmesg output to determine the actual address of 
that pin for a 5i25 interface card.  He is using a 5i20 + 2 daughter cards 
I know nothing about. I am still configuring things as I'm just now 
bringing it (the 5i25) to life.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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