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From: "karl AT aspodata DOT se [via geda-help AT delorie DOT com]" <geda-help AT delorie DOT com>
To: geda-help AT delorie DOT com
Subject: Re: [geda-help] Help understanding messages from auto-router
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Comments: In-reply-to "Cam (camfarnell AT bitflipper DOT ca) [via geda-help AT delorie DOT com]" <geda-help AT delorie DOT com>
   message dated "Sat, 09 Sep 2023 14:44:24 -0300."
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Date: Mon, 11 Sep 2023 14:39:41 +0200 (CEST)
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Cam Farnell:
> Well, having had no response here, I wrote a Python program which 
...

Very nice, I did something similar but in perl as a perl module (kind 
of a lib): http://aspodata.se/git/openhw/bin/Pcb.pm

You could possible help a fellow by publish your program as a lib.

> But, given the silence here, I suppose the real message is that I
> should be using pcb-rnd instead.

pcb-rnd should give you more options, and the real action have moved
there. The only downside with pcb-rnd is much bigger files, but in
every other aspect it should be better.

> On 2023-09-02 20:47, Cam (camfarnell AT bitflipper DOT ca) [via geda-help AT delorie DOT com] wrote:
> > I'm running PCB "version 4.2.2, Compiled on Mar  9 2022 at 23:53:29" on an Ubuntu 22.04.3 LTS machine.
> > 
> > After running the auto-router on my board, I get the following messages:
> > 
> > 692 rat lines remaining
> > 692 of 692 nets successfully routed.
> > Dropping via at (2272.50, 3587.50) mil because it's hole would overlap with the via at (2272.50, 3572.50) mil
...
> > Dropping via at (5757.50, 2996.50) mil because it's hole would overlap with the via at (5757.50, 3011.50) mil
> > Total added wire length = 41.38553 m, 2476 vias added
> > Congratulations!!
> > The layout is complete and has no shorted nets.
> > 
> > Are these "dropping via" messages something I need to be concerned
> > about? Missing vias would be bad. I couldn't find anything in the
> > manual about this.

Well the message says that the router will not place vias at
overlapping positions, which seems to be a good thing.

Since you got a "The layout is complete and has no shorted nets."
there will not be any missing connections, it says all things are
connected and there are no shorts. Finish this off by doing a drc
to make sure that this is manufacturable.

Regards,
/Karl Hammar