Re: [CAD_CAM_EDM_DRO] Re: New to group and need some info

John,

You will need a 5 volt supply. The ground for the 5 volts supply will need
to be connected to one of the ground pins on the parallel port connector.

You can get the 5 volts from your PC or add another 5 volt supply. If you
look at my break-out board (www.campbelldesigns.com) you will see that the
break-out board has a built-in 5 volt supply.

In any case, you will need a 5 volt supply.

Bob Campbell

----- Original Message -----
From: "motomann2003" <motomann2003@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, November 14, 2002 9:26 AM
Subject: [CAD_CAM_EDM_DRO] Re: New to group and need some info


> Im sorry if I wasnt clear.
> I meant can I use common ground from a parallel pin for the optos on
> a G201 drive, and not worry about wiring a +5Vdc line from the PS to
> the gecko drives?
> Like I said in the previous post, 1 drive is an older, outdated
> drive and the other 2 are newer revisions.
> While I know that Mariss suggests using the PS +5Vdc, I was just
> wondering if it is possible to use a PP ground to the optos.
>
> Thanks,
> John
>
> --- In CAD_CAM_EDM_DRO@y..., "caudlet" <tom@t...> wrote:
> > <snip>I was curious if I can use a parallel port ground pin for
> the
> > +5Vdc
> > on the drives, instead of getting +5Vdc from a molex from the
> Power
> > supply on the PC?</>
> >
> >
> > If I understand the question correctly to answer is no. There are
> a
> > bunch of ground pins on the parallel port but no +5. They are all
> > tied together at the PC end. Technically you could modify a cable
> and
> > peal out one of the wires that would normally go to ground at the
> > computer end and re-route it to +5 from either an external supply
> or
> > from a port on the computer (game) that has +5. On your breakout
> > board (if you have one and it is at the Gecko end of the cable)
> you
> > need to make sure the wire/pin you decide to use is not connected
> to
> > the other ground pins and you can redefine it as +5. The PC and
> the
> > +5 supply MUST share the same ground.
>
>
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