Re: gEDA-user: Updating footprints in place

["John Luciani" <jluciani@xxxxxxxxx>]

On 10/7/07, Randall Nortman <geda-lists@xxxxxxxxxxxxxxx> wrote:
> On Sun, Oct 07, 2007 at 12:45:47PM -0400, John Luciani wrote:
> [...]
> > You could definately do it with a script but unless you have a lot of footprints
> > to update or have to update a number of layouts it may not be worth it.
>
> Well, if the script is generic (rather than hard-coding which
> footprints you're looking for), it only ever has to be written once,
> and then used for many different footprints/layouts.  The hardest part
> is searching paths for the updated footprints -- that part could be
> ripped from gsch2pcb (except that's written in C and this is a natural
> job for a higher-level language).

It never seemed like it we save me enough time to bother with.

> > If your components are on the grid manual replacement goes quickly.
>
> Well, that all depends on what "the grid" means.  I usually end up
> with boards that have components on different grids, and I often set
> up a module/cluster of components on one grid, then select and move it
> as a single mass, possibly onto another grid, and so the components
> then end up on a fractional grid of some sort.  This is particularly
> likely when I'm using a metric grid on one module and imperial on
> another.  The part I'm looking at right now ended up with its center
> on (1410.50,409.10), for one or both of those reasons (I can't really
> recall).

I place components on a 25mil grid. If I have a group of components that has
gotten off grid I set a very fine grid (0.1mil) select a component
center then move the
group using that reference point back to the 25mil grid.

The finest pitch metric device I have used is 0.5mm pitch. For 0.5mm and larger
I haven't had issues with placing on a 25mil grid.

(* jcl *)

-- 
http://www.luciani.org


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