Re: [CAD_CAM_EDM_DRO] Re: laptop port - power

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@...
www.campbelldesigns.com
Breakout board
THC board sets
CNC router plans
Stepper Motors

----- Original Message -----
From: "turbulatordude" <davemucha@...>
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:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>
>
>
>
>