On Tuesday 14 February 2017 12:59:20 Gene Heskett wrote:

> On Tuesday 14 February 2017 11:55:07 Jon Elson wrote:
> > On 02/14/2017 10:34 AM, Gene Heskett wrote:
> > > Greetings folks;
> > >
> > > Looking at man motion, I see that the axis."L".jog functions are
> > > quite well covered, particularly including the use of the inner,
> > > spin it with a finger type dials.
> >
> > On page http://pico-systems.com/pendant.html  I have links
> > to the hal files for the pendants I have set up.
> > I can jog the axes as well as set the spindle override and
> > feedrate overrides with the pendant.
> > This can be done with 7 input pins including the encoder, if
> > counted via the software encoder component.
> >
> > If you use a hardware encoder channel, then it only takes 5
> > digital inputs.  I used diodes to encode the axis selector
> > switch, so i could use a single-deck switch, instead of
> > multiple pole.
> >
> > This hardware stuff doesn't apply to your presumably USB
> > controller, but the hal file might give you some ideas of
> > how to connect it up for jogging, etc.
> >
> > Jon
>
> Not usb, some sort of a db9 setup on a per machine or per axis. But I
> just noticed a bnc on the back, presumably for house sync from back in
> NTSC days.  Thats for the whole controll panel/pendant. I'll study the
> schematic for the pieces since I cabbaged that too. :) It turns out
> that I only have 2 complete units, I found the center, spin dial for
> the third, but not the outer dial. I may have decided they weren't
> salvageable due to their badly worn condition. I also found a spin
> dial I had made by making a white plastic knob for a teeny stepper
> motor, intending to feed its 6 wire coils to a comparator to get an
> a/b quadrature timed output I could feed an encoder module with.
> Possibility's endless, useability's less so. I'll take the manual for
> it with me as I head out to take my baby a valentine & a big box of
> chocolates.  Who knows, I mig I head out to take my baby a valentine & 
> a big box of chocolates.  Who knows, I might learn something?

First, don't take her chocolates when she is in the shop. I had a 
suspicion, and also took a box of Cheeto's along, which we much closer 
to what she wanted for snacking.

Back to this search dial.

1. The schematics in the service manual off zero information beyond the 
signal names on a 3 pin header and the signal names on a 6 pin header.  
Zero other info, as if its a secret.

2. It apparently has active electronics inside a snap-on tin cover over 
the die-cast body that hides both the search function, and the jog 
function. It has no continuity from either the vdd and any output, or 
from gnd to any output, internal or external.

3. But the jog wheel has a very mild cogging feel, similar to what it 
might have if the encoder portion was hall effect, feels a lot like a 
weak ATS-667 in there but with 5 bits of output.  And the search dial 
only turns perhaps 80 degrees total, with a noticeable friction, and a 
ball dropping into a radial slot in the crimped on tin cover for the 
center detent, slot perhaps 20 thou wide, ball less than 1/16th inch in 
diameter.

4. I'll rig a 5 volt psu tomorrow and see if I can get any smarter.  
Tonight the only thing that will put my shoes back on my feet is setting 
the trash out, its that day of the week again. :)

Or, byte the bullet and buy 2 of the MPJones jog wheels, one for each 
axis. Maybe more for spares?

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> Cheers, Gene Heskett


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>

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