Re: gEDA-user: modify footprint and update layout

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

A good survey question:

What are the most common reasons that you need to change land patterns?

Steve Meier


On Tue, 2008-12-16 at 22:38 -0500, DJ Delorie wrote:
> > I could go a step further or two. Same number of pins? same number
> > of pads. same pin and pad pin numbers?
> 
> Each thing that must match is one more thing that you can't change and
> still update the footprint.
> 
> > A key point is that you have to have the old land pattern.
> 
> I wouldn't rely on that.
> 
> > I think we should presume that the two patterns have the same pin
> > numbering scheme.
> 
> I often fiddle with the thermal pads on footprints, replacing one big
> pad with many smaller ones.
> 
> Getting these rules right is most of the work in this type of project.
> 
> 
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