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'[EE] ExpressPCB'
2008\07\03@104040 by Detrick Merz

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For folks who use (or know about) ExpressPCB, is there a repository of
custom schematic components anywhere?  Google turned up a little teeny
tiny bit, showing me one from a univeristy.  It might be useful, but
it seems that an ExpressPCB user community could do well to share any
custom components they have/make.  I suppose a repository of custom
pcb components would be useful too, but perhaps less so... a DIP28 is,
generally, a DIP28... but a PIC16F876A is not quite a PIC16F886.

Thanks!

2008\07\03@132859 by Harold Hallikainen

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> For folks who use (or know about) ExpressPCB, is there a repository of
> custom schematic components anywhere?  Google turned up a little teeny
> tiny bit, showing me one from a univeristy.  It might be useful, but
> it seems that an ExpressPCB user community could do well to share any
> custom components they have/make.  I suppose a repository of custom
> pcb components would be useful too, but perhaps less so... a DIP28 is,
> generally, a DIP28... but a PIC16F876A is not quite a PIC16F886.

I think there is a lot of duplicate work going on in the creation of PCB
footprints and schematic symbols. I know there are some open source layout
packages that may do what I'm suggesting, but I have not yet taken the
time to investigate. Anyway, it SEEMS that these design files should all
be ASCII and have separate files for separate primitives. For example:

1. A file that describes a particular pad.

2. A file that describes a particular footprint and references the pad
files of #1.

3. A schematic symbol file for each symbol.

4. A component file that references the schematic symbol file (#2) and the
footprint file (#1).

All these files would be available on a wiki that users contribute to.

Harold


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2008\07\03@133601 by Vic Fraenckel

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Detrick Merz wrote:
> For folks who use (or know about) ExpressPCB, is there a repository of
> custom schematic components anywhere?  Google turned up a little teeny
> tiny bit, showing me one from a univeristy.  It might be useful, but
> it seems that an ExpressPCB user community could do well to share any
> custom components they have/make.  I suppose a repository of custom
> pcb components would be useful too, but perhaps less so... a DIP28 is,
> generally, a DIP28... but a PIC16F876A is not quite a PIC16F886.
>
> Thanks!
>  
I am an ExpressPCB user and have been for 3+ years. Might I suggest:

http://tech.groups.yahoo.com/group/expresspcb/

The file section  contains user contributed symbols both PCB and SCH.
You must join to group to view the file section.

I find it very easy to roll your own of either type if you need
something special.

HTH

Vic
--

*____________________________________________________________________________________________*

*Victor Fraenckel
KC2GUI
windswaytoo ATSIGN gmail DOT com**

*

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