configuring a large batch of autorouter jobs?

Hi All,

What I'd like to know is how to configure eagle to run a huge batch of autorouter variants (I'm thinking 1000's here) with many combinations of preferred directions & costs in an effort to reduce the via count of manually soldered boards.

The "autorouter main setup" and "routing variants dialogue" in eagle don't seem to offer any way to do this, are these dialogues configurable? If not, can this functionality be driven by a script or ULP? If so, Does anyone have a good example i can use or adapt?

Thanks in advance

Robert.

0 roberttempleman over 8 years ago

adding many more optimisation passes helps alot with reducing via count... Attached is an example with 400 optimisation passes. Load this using the load option in the autorouter main setup. When used with high effort this always reduces the via count significantly over just doing the default no. of optimisation passes. Quite often It attains 100% routing after a large no. of optimisation passes, so this is definitely something worth doing.
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0 roberttempleman over 8 years ago in reply to roberttempleman

it wouldnt accept the attachment
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0 roberttempleman over 8 years ago in reply to roberttempleman

It seems loading in more than about 45 optimisation passes results in a corrupt .brd file, however, deleting all but a few of the optimisiation passes in the brd file fixes this!
So far I've managed to save a hole lot of drilling & via-ing just by doing this. The process is still very tiresome, but at least the autorotuter seems to at least have a chance to do a better job..
I've attached my optimisation file as .txt, so delete the .txt at then end to load it into the dialogue. Also select auto & auto for the dirns & auto-grid to let eagle do its 22 combos
It'd still be great to know how to script this..

Cheers,
Rob.

Attachments:
good_4_6.ctl.txt.zip
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