Re: [CAD_CAM_EDM_DRO] Gecko 5V supply using game port/ XY joystick jogging

Tom,

What I have done to get 5 volts is to mount a 9 pin connector on the PC and
then use a 9 pin cable to run to my controller. The reason that I used a 9
pin cable is due to the low cost of the cable. I put 5 volts on all 9 pins
in the PC.

I also use a power strip with a circuit breaker on it to power my PC.

Bob Campbell

----- Original Message -----
From: "Tom Eldredge" <harmonyt@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, April 02, 2001 9:34 AM
Subject: Re: [CAD_CAM_EDM_DRO] Gecko 5V supply using game port/ XY joystick
jogging


> Game port pot use?
>
> Some things to consider:
>
> The newer computers are dropping the game port in favor of USB, are they
> not?
>
> The pot control of the game port is very crude, and unreliable. I have
used
> it for jog control and am turning away from it for safety reasons.
>
> The CH products Game port board (ISA slot based) only works up to 600 mhz.
> The newer computers are dropping the ISA slot too.
>
> I suppose the game port could be used if some of the smart guys on this
> forum developed a pci card which ran with better drivers than are normally
> available.
>
> On the other hand, I guess for hobby use, there will be PC motherboards
> around with these features for another year or so. Then the consumer
based
> industry will leave us behind, or we will have to pay more for our
> "industrial" PC motherboards.
>
> Just some thoughts.
>
> Tom
>
>
> ----- Original Message -----
> From: Doug Fortune <pentam@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Monday, April 02, 2001 12:29 AM
> Subject: [CAD_CAM_EDM_DRO] Gecko 5V supply using game port/ XY joystick
> jogging
>
>
> >
> > jvicars@... wrote:
> > >The Gecko 201 manual says that the 5V for step and direction must come
> > >from the indexer/pulse source. I.E. the computer. Can you get 5V
through
> > >the parallel port somehow, or do you have to run a 5V line from the
> > > computer to the drivers? Anybody have advice on how to hook this up?
> >
> >
> > mariss92705@... wrote:
> >
> > > Most PCs have a game port. The +5VDC is available on .. the game port.
> >
> > Hi Joe:
> >
> > This is exactly (among others) the reason why I recently (March 28/2001)
> > announced how to wire up the pBREAK to the game port - see diagram at:
> >
> >
>
http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/CIRCUITS/parallel_to_gam
> eport_pinout.gif
> >
> > To review - the 25 pin parallel port is broken out into a ground, 12
> output bits
> > and 5 input bits, leaving 25-18= 7 redundant ground lines in the
parallel
> cable.
> > If we tap into the game port, we can get +5 & GND extremely neatly.
> >
> > The +5 is sent down the parallel cable, and is available to the Gecko's
at
> > the far (equipment) end, where you breakout the signals there to the
Gecko
> > +5, GND and logic signals.
> >
> > That answers your question on where to get the +5 for the Gecko's
> > (or various other purposes). See my website for a picture of a
> > parallel/gameport wired setup for exactly this purpose.
> >
> > - - - -
> >
> > However, if I may ramble, there are a total of four additional input
bits
> > and four input potentiometers on the gameport, which we now have nearly
> > free access to. We can use the four additional input bits, and we can
> also
> > use one (of the four) potentiometers for (say) feedrate over-ride (but
> we'll
> > need to wait for the software guys to implement that).
> >
> > Using 2 pots for XY joystick control:
> > Or perhaps, use two lines for two potentiometers (leaving 3 input bits).
> > Or perhaps, skip the GND (use the parallel port GND), use two input
> > pots and 4 input bits.
> >
> > I understand EMC is close to supporting XY joystick jogging.
> >
> > If it were me implementing the control panel, I'd keep the X pot
separate
> > from the Y pot (rather than combined into a single joystick), so that
> > linear manual moves in one axis (say X) don't result in accidental moves
> > in the other axis (ie you might get a jog instead of a straight cut!).
> >
> > Doug Fortune
> > http://www.cncKITS.com
> >
> >
> >
> >
> >
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>
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>
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