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

Thanks Bob for the tip.

Isn't the game port 15 pin? I think it is the same as the monitor connector
on a MAC.

Tom

----- Original Message -----
From: Bob Campbell <bob@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, April 02, 2001 1:03 PM
Subject: 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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