Re: [CAD_CAM_EDM_DRO] Parallel port isolation

Doug,

You can count me in for 2 boards. I have blown a couple of parallel ports
over the last 5 years. Unfortunately when they went, the symptoms were very
subtle. Much time was wasted tracking down the problem.

Paul Devey

-----Original Message-----
From: Doug Harrison <prototype@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Thursday, July 20, 2000 1:45 PM
Subject: Re: [CAD_CAM_EDM_DRO] Parallel port isolation

>Ron;
>
>I believe you are referring to the wonderboard project, for which I am
>responsible. My original goal was to build a parallel port isolation board
>for interfacing with CNCPro. I acquired much help from members of the list
>in sorting out the details. The one detail I haven't sorted out is how to
>get time to build a prototype. Of course, it doesn't help that I know

squat

>about PCB layout.
>
>I have purchased all the parts to build two boards and have sketched what I
>think the board should look like. I just don't have time to build it.
>
>Here's an offer. I'll supply the parts and pay someone $300 if they will

do

>the board layout and testing. I'll foot the bill for a production run of
>20-50 bare boards. My only restrictions are:
>
>1. The final design must conform, at a minimum, to my original design
>criteria.
>
>2. I get reimbursed for my cost on any boards that list members wish to
>purchase. I'll keep whatever the list members don't want. Based on the
>inquiries I had off list when we were discussing this, there should be
>little problem getting rid of 20-30 boards right away.
>
>Doug Yeager, if you are there, this board might boost your sales. I would
>be more than happy to leave the extra boards with you, since you are set up
>for credit cards. We can work out the details as it suits you.
>
>Yes, I know $300 is not much to do a board layout. I'm not doing this one
>for profit either, and that is why the darn thing is still a dream. My
>occupation won't allow me the liberty of hobbies right now.
>
>Well, any takers?
>
>Doug Harrison
>
>----- Original Message -----
>From: Ron Ginger <ginger@...>
>To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@egroups.com>
>Sent: Thursday, July 20, 2000 1:20 PM
>Subject: [CAD_CAM_EDM_DRO] Parallel port isolation
>
>
>> A while back there was a lot of discussion here about building a module
>> to isolate a PC parallel port. Did any thing ever come form that? I
>> recall someone was going to offer a board for this.
>>
>> What I want is a little box to plug into the PC, maybe on a short cable
>> or direct into the back of the PC, and have screw terminals on it for me
>> to hookup to my driver board. Anyone build such a box.
>>
>> ron
>>
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