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Subject:	Re: [geda-user] Mysterious refdes and BOM items
From:	John Doty <jpd AT noqsi DOT com>
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Date:	Fri, 23 Jan 2015 13:23:41 -0700
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On Jan 23, 2015, at 3:43 AM, Richard Rasker <rasker AT linetec DOT nl> wrote:

> Apparently, my schematic contains off-page connectors
...
> The second mystery has to do with the bom generated by PCB -- it says
> that there are 14 elements with unknown refdes, unknown footprint, and
> unknown values:
> 
> 14,"(unknown)","(unknown)",(unknown) (unknown) (unknown) (unknown)
> (unknown) (unknown) (unknown) (unknown) (unknown) (unknown) (unknown)
> (unknown) (unknown) (unknown)
> 
> Could this be related to the first problem?

Yes. I suspect you have some graphical symbols (titleblock, busripper, …) that have somehow lost their graphical=1 attribute.

You can make a list of all symbols used by a design with something like:

awk '/^C /{print $7}' *.sch | sort | uniq

Look for symbols that don’t represent components and track those down. The rules are a bit arcane: power rail symbols like gnd-1.sym don’t need graphical=1.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com

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