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Mail Archives: geda-help/2013/01/23/08:56:30

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Subject: Re: [geda-help] some footprint scripting help for newbie please
From: Stefan Salewski <mail AT ssalewski DOT de>
To: geda-help AT delorie DOT com
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Date: Wed, 23 Jan 2013 14:56:12 +0100
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On Wed, 2013-01-23 at 11:59 +0100, Jakub Klawiter wrote:
> Hello!
> 
> I like to learn how gEDA is working, was looking at tutorial and read many
> pages on your wiki. I think I'm beggining 

[...]

Please try to turn on English spell checking in your email client, that
makes it easier for us to read your postings -- please note not all of
us have English as native language, so guessing the right words is not
easy. (Guessing may be fun for some people -- for English my fear is
that reading wrong spelling will make my own more bad than it already
is :-(

Thermals are not defined in footprints -- for pins and vias we use the
thermal tool called THRM to make a thermal to the surrounding copper
polygon. For pads we have to draw a trace to the copper polygon --
ensure that Settings->NewLinesClearPolygons is not selected in menu, or
use j key when mouse hovers over an existing trace to make it connect to
the polygon.

For beginners I recommend DJ's tutorial

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

For footprints we have the very verbose text

http://www.brorson.com/gEDA/land_patterns_20070818.pdf

I wrote a summary, see bottom of this page

http://www.ssalewski.de/SFG.html.en

Unfortunately that describes not the latest format -- I think we can use
units like nm in footprint definition now, I will try to adapt that text
when I have some spare time...

Older footprints where created by m4 scripts with parameters indeed, but
most people favorite the so called newlib footprints now, which are self
contained and do not depend on m4 macro processor. A lot of tools exist
to create footprints, some use textual description, some have graphical
front-ends.

Best regards,

Stefan Salewski
  

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