wb lcd display, PCB software

[Dave Mumert]

Hi Darrell

Another Calgarian! small world.

I have been using a small schematic capture/PCB editor program called QCAD.
It is OK for small projects.
Check at http://www.winqcad.com/

It is just $99 for 600 pins.  The latest version has copper pour.  The
autorouter seems to complete most jobs.

Dave Mumert
Calgary,AB

----- Original Message -----
From: "Darrell N." <darrelln at datalog.ab.ca>
To: <gmecm at diy-efi.org>
Sent: Monday, September 10, 2001 12:30 PM
Subject: Re: wb lcd display


> Bill Shaw wrote:
>
> > While waiting for my DIY-WB I started thinking about a
> > display for it.
> > I need help in a few areas:
> >
> > 1)  I need someone(s) to review the schematics for technical
> > correctness before it goes to layout.
>
> Can't help you there.  It looks OK to me, but I'm not that familiar with
> either PICs or the display you are using.
>
> > 2)  I need a robust 12V to 5V power supply for it.
>
> Use a National LM2931 or similar regulator, it is designed for automotive
> applications and can handle load dump, reverse polarity, short circuits,
> just about everything you can throw at it.  Get rid of your ferrite beads
> and put in few hundred uH power inductor in series with the input.  A
> couple of honkin caps and possibly a MOV or Tranzorb across the input
> and you should have it handled.
>
> > 3)  I need someone to do the PCB layout.
>
> That I may be able to handle, if there's demand for the display board on
> the list.
>
> > Yell if you can't print the EPS file and I'll see if I can
> > get it to you in another format.
>
> My Adobe Acrobat converted this file into a PDF.  Let me know if you
> want me to upload the PDF to incoming.
>
>
> darrell n
> Calgary, Alberta, Canada
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