Re: [CAD_CAM_EDM_DRO] Re: laptop port

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@...
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: Friday, February 27, 2004 8:54 PM
Subject: [CAD_CAM_EDM_DRO] Re: laptop port


> Check out the break out boards that are available.
>
> I know there is one that has opto's for all the inputs and outputs.
>
> With that you can interface to other devices without fear of risking
> your port.
>
> Dave
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