Re: laptop port - power

On the pcb driller, that's fine as 110 is available. for telescope
work it is a car battery for power and the laptop.

It looks like the Sound Logic boards are 110.

Dave




--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Robert Campbell" <bob@c...>
wrote:

> Dave,
>
> For anyone using a laptop, I highly recommend that they use a Sound

Logic

> breakout board. The board will support the 3.5 volt signals found

on some

> laptop mother boards. The board also provides the 5 volts to power

the Gecko

> drive optical isolators.
>
> Bob Campbell
> Bob@c...
> www.campbelldesigns.com
> Breakout board
> THC board sets
> CNC router plans
> Stepper Motors
> ----- Original Message -----
> From: "turbulatordude" <davemucha@j...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, February 28, 2004 8:37 AM
> Subject: [CAD_CAM_EDM_DRO] Re: laptop port - power
>
>
> > I'm thinking of trying my old laptop to see how it works. I have

an

> > old IBM and an old Compac.
> >
> > My question is about the 5V power.
> >
> > For telescope use, it would need to run on battery power and for

shop

> > machine control it could be plugged in to the AC lines.
> >
> > That begs the question of the most apporprate place to tie in for
> > power.
> >
> > It would see that todays laptops have usb, to that offers the 5V
> > simply.
> >
> > Others have keyboard ports.....
> >
> > Is there a better way ?
> >
> > Dave
> >
> >
> >
> >
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Robert Campbell"

<bob@c...>

> > wrote:
> > > For laptop users the Sound Logic breakout board is a good

solution.

> > It provides buffered inputs and will accept the 3.5 volt signals
> > found in some laptop. The signals are then buffered and amplified
> > back to a five volt level. The four outputs are optically

isolated as

> > well as the inputs from all limit sensors. If you are using Gecko
> > drives then the optical isolation in the Gecko drives will give

you

> > the needed optical isolation for the step and direction signals.
> > This in effect isolates the parallel port ground from your

controller

> > ground.
> > >
> > > Bob Campbell
> > > Bob@c...
> > > www.campbelldesigns.com
> > > Breakout board
> > > THC board sets
> > > CNC router plans
> > > Stepper Motors
> >
> >
> >
> >
> > Addresses:
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wanliker@a...,

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