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Mail Archives: geda-user/2015/10/20/02:50:16

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Mon, 19 Oct 2015 23:50:02 -0700 (PDT)
Date: Tue, 20 Oct 2015 08:50:01 +0200
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Pin mapping (separate symbols from mappings)
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> >> Indeed that is. But this isn't:
> >> 
> >>>> The package may include footprints
> >>>> viable for this component. Alternatively the package may refer to a
> >>>> footprint library by giving filenames of a footprints known to work.
> > 
> > I read this as "the netlister chooses a footprint= from the list of
> > alternatives in the package”.
> 
> Then why the reference to “filenames”? This is clearly intended to be pcb-specific.
> 
> The “footprint” attribute in geda-gaf is a bit confusing, as it really refers to the physical package of the component. The actual board footprint you want depends on the layout tool’s library and the board fabrication processes. This is beyond the scope of geda-gaf. Lately, I’ve been mapping footprints using a “database” that has entries like:
> 
> (footprint-name "CAPACITOR" "0603" "CAPC1608X87N”)
> 
> I load the mapping script and data into gnetlist with -m. Maybe I should put this on gedasymbols.

I guess in gschem you fill in footprint value "0603" and then you choose a little bit different fooprint for reflow soldering and wave soldering even though package size is the same. This sounds good.

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