Peter, every PCB fab house I ever worked with always wanted to array 
their own tiny
PCBs. The reason is that PCB shops each have a different  max PCB size 
they work with.

Just provide a good single piece layout, and they will do the rest. 
These guys have software
that allows then to do this easily.

--Bob

Peter Todd wrote:
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> I've got yet another project consisting of about a zillion little leds
> all in a huge array and am rather tired of laying out this stuff by
> hand. I'm planning to write some python scripts and what not for gEDA to
> automate this.
>
> So, in industry, how do you guys handle these sort of problems? I'm
> assuming these $50,000/seat pcb layout/schematic capture packages I keep
> hearing about can do more than automate routing for you.
>
>
> I'd like to do my best to write a fairly generic set of software for
> this stuff, as in the future I've got a project planned that would
> essentially involve making arbitrary-defined "model railroads" The
> software would take a file defining the paths in the railroad, then
> generate a schematic with the appropriate amount of electromagntes and
> drivers and automatically lay them out on the pcb in the correct places.
>
> Well, that's the plan anyway. :)
>
> - -- 
> http://petertodd.org
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