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	Fri, 21 Aug 2015 00:16:23 -0700 (PDT)
Date:	Fri, 21 Aug 2015 09:16:18 +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] [pcb-rnd] parametric footprint: plcc() and qsop()
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SS 0.65mm pin spacing
SO 1.277mm pin spacing
DIL 2.54mm pin spacing
QFN

On Fri, 21 Aug 2015 09:04:39 +0200 (CEST)
gedau AT igor2 DOT repo DOT hu wrote:

> Hi all,
> 
> finished the support for plcc() and qsop() - they are just frontends to 
> qf() and so() respectively. These were the last two missing generators on 
> my TODO list.
> 
> Please let me know if you know of any footprint family that could be or 
> should be generated. The requirements are:
> 
> - the footprint family is a series of footprints that can be generated 
> using the same code, with changing some base properties (e.g. number of 
> pins)
> 
> - dimensions and other properties can be calculated from the base 
> properties with reasonable formulas and conditional code; e.g. sot* is not 
> a good candidate for generation, as sot23 or sot89 can not be generated 
> from some common anestor by varying one or two parameters, but would need 
> a large table that translates package name to a pattern - easier to keep 
> those in static footprint files
> 
> - has a reasonable amount of existing variations; e.g. it is not worth 
> writing a generator for the dsub family because there are only a few of 
> them in common use (db9, db15, db25, and maybe db37).
> 
> - preferably a link to a datasheet that shows at least 3 members of the 
> family; if that's not possible, separate datasheets describing at least 3 
> members of the family
> 
> 
> Regards,
> 
> Igor2

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