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Message-ID: <533F4740.5010606@mochima.com>
Date: Fri, 04 Apr 2014 19:58:56 -0400
From: Carlos Moreno <moreno+geda-help AT mochima DOT com>
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To: geda-help AT delorie DOT com
Subject: [geda-help] Workflow Schematic Editor  -> schem2pcb -> PCB Designer won't work!
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Hi list,

I'm just getting started with this.  Working with the versions installed
through the distro repositories --- Ubuntu 12.04.

I'm trying to create a schematic containing custom symbols  (at least
one, for the LME49811, an audio amplifier), but the whole thing won't
work!   I also tried with the latest versions from source, both on Ubuntu
12.04 and on CentOS 6.5 --- could not make it work on either of them!

When doing the schematic to PCB conversion, the PCB editor comes
up, the symbols (the footprints) do show, but not the connections.

The log (Log window of the PCB editor) shows this bunch of error messages:

> Importing PCB netlist nada-LME49811.net
> Warning! Net "unnamed_net1" is shorted to U1 pin 12
> Warning! Net "unnamed_net1" is shorted to net "unnamed_net4"
> Warning! Net "unnamed_net1" is shorted to net "unnamed_net3"
> Warning! Net "unnamed_net3" is shorted to U1 pin 12
> Warning! Net "unnamed_net3" is shorted to net "unnamed_net4"
> Warning! Net "unnamed_net3" is shorted to net "unnamed_net1"
> Warning! Net "unnamed_net4" is shorted to U1 pin 12
> Warning! Net "unnamed_net4" is shorted to net "unnamed_net3"
> Warning! Net "unnamed_net4" is shorted to net "unnamed_net1"

To avoid copy-n-pasting long files, I'm placing them on my web site
and include here the links:

Symbol file for the LME:  http://www.mochima.com/tmp/LME49811.sym

Schematic using this LME and just two resistors and a couple of
connections:  http://www.mochima.com/tmp/nada-LME49811.sch

Notice that both R-SMT-0805.fp and LME49811.fp are custom footprints
that I created --- and they both show up ok on the PCB;  again, the
rat nets are the ones that do not show at all.

Help!

Thanks,
Carlos
--
PS:  Roughly speaking, I'm following these tutorials from youtube:

http://www.youtube.com/watch?v=-SrtQ-LdxVo
http://www.youtube.com/watch?v=2Faf2nACG34

Also, this tutorial on the PCB designer (presumably from your own
docs?), which guided me through creating the footprint for the LME:

http://www.delorie.com/pcb/docs/gs/gs.html