[Coco] need a mini 6551 RS-232 pak layout

[jdaggett at gate.net]

Roger

You can't export ExpressPCB to other programs. ExpressPCB is 
proprietory software and can only be used to generate boards through that 
company. Same holds for PCB123. Using these software packages limit 
you to that specific vendor. It is a trade off for not having to purchase 
layout software. You end up paying for the software by increase board 
costs. LArge scale production PCBs can be done for as little as $0.25 a 
square inch for two sided. The problem is a decent layput program is going 
to cost in the neighborhood of $1000. If you do onesee twosee boards one 
or two times a year then programs like ExpressPCB are acceptable. If you 
want to do a board under 12 square inches and two layer then I recommend 
the freeware version of Eagle and then use a board house like PCBex or 
BatchPCB.  With this approach you get soldermask and silkscreening for 
less per board than with ExpressPCB.


james


On 16 Jan 2009 at 13:31, Roger Taylor wrote:

> It looks nice but you didn't allow for the diamter of the router bit
> used by ExpressPCB to cut the board.  If cut along your board
> perimeter it would leave the edge connector width too short and there
> would be alignment problems.
> 
> I just downloaded DipTrace 1.50 and it looks nice but I don't see a
> way to import or export to ExpressPCB schematics or layouts, and the
> board service appears to be a forwarding service by the DipTrace
> website to the company of your choice, but I could have read the site
> instructions wrong.  Probably not a wise choice for my projects.
> 
> 
> 
> 
> At 12:54 PM 1/16/2009, you wrote:
> >Roger
> >
> >What I have is patterned off the short Floppy disk drive controler
> >board(FD501/502). It can be reduced with ease. I want to eventually
> >get that pattern over to Eagle.
> >
> >See attachment
> >
> >james
> >
> >On 16 Jan 2009 at 11:36, Roger Taylor wrote:
> >
> > > At 05:47 AM 1/16/2009, you wrote:
> > > >Roger
> > > >
> > > >I am familiar with both programs as well as Eagle. That would be
> > > >a simple and easy task to do. Do you have any concept of size of
> > > >theboard. I already have a template for a mini Coco plug in board
> > > >in ExpressPCB that is 2.5 x 3.8 inch. It has the fingers for
> > > >plugging into the MPI.
> > > >
> > > >
> > > >james
> > >
> > >
> > > The board size I have will fit in any short black game pak case if
> > > ever there should be a short supply of the cases I'm working on
> > > obtaining which are almost the same.  The board already has the
> > > mounting holes exactly where they need to be based on trial and
> > > error from making paper cutouts of the printed board and comparing
> > > to existing cases and game pak boards.  It's a match.  I can take
> > > a look at your design, though.
> > >
> > > --
> > > Roger Taylor
> > >
> > > http://www.wordofthedayonline.com
> > >
> > >
> > > --
> > > Coco mailing list
> > > Coco at maltedmedia.com
> > > http://five.pairlist.net/mailman/listinfo/coco
> >
> >
> >
> >The following section of this message contains a file attachment
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> >
> >    ---- File information -----------
> >      File:  coco cart short.pcb
> >      Date:  16 Jan 2009, 13:52
> >      Size:  1678 bytes.
> >      Type:  Unknown
> >
> >
> >
> >--
> >Coco mailing list
> >Coco at maltedmedia.com
> >http://five.pairlist.net/mailman/listinfo/coco
> 
> -- 
> Roger Taylor
> 
> http://www.wordofthedayonline.com
> 
> 
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco