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Subject: Re: [Homebrew_PCBs] Re: Autorouters

From: Peter Harrison <peter.harrison@...>
Date: 2006-01-06

Stefan Trethan wrote:
> Well, i just took one of my projects and deleted all traces (yes i saved
> under different name).
> Then i tried both autorouters that come with my software, and different
> settings. The best i got was 5 signals remaining.
> Mind you this is a board that was already routed completely by hand single
> side with no bridges.
>
> I ackonweledge that i have high demands on layouts, since i believe a lot
> of it is art, but if the autorouter can't even manage to route all signals
> of a board that is easy to route what can i think of it?
>

Do you have pictures of the hand-routed vs the autorouted versions of
that board?


For My own preference, I suspect i do not know how to best direct the
autorouter in Eagle - too many options - and the default options are not
too useful. I tend to let the auto router do either just some traces
then hand route the rest or autoroute a board then tidy it up by hand
until it looks nice and satisfies any other requirements I have.

I do not have images of autorouted boards as I have yet to make one that
was fully autorouted.

It seems to me that parts placement is the real art. I don't think I
have adequate skills in that area.

Pete Harrison