I'm guessing here, but are you still using the default 50 mil routing
grid?

If you change the routing grid it's usually able to get more tracks in
the same space. Experiment with it to see what kind of results you
get, but I'd think a lower number, maybe 25, would be a good start.

-Denny

----- Original Message -----
From: "William Chops Westfield" <westfw@MAC.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, November 12, 2003 11:53 AM
Subject: Re: [OT] : How to force EAGLE to use single layer to route
only ?


> On Tuesday, Nov 11, 2003, at 23:04 US/Pacific, Hopkins wrote:
>
> >> In the route dialog, set the "direction" of the layers you don't
want
> >> to "N.A." (Not applicable.)
> >
> > I tried this but the auto router only routes some tracks - not all
> > tracks. Were if I us the top direction it shows all of the tracks.
>
> That's because it is unable to route all the nets.  It will
frequently
>   be impossible to route all the nets in a single layer, and like I
> said, eagle's router isn't very good at solving that problem even
for
> cases where it IS possible.  Successfully making circuits that are
> routable in one layer is quite an art, involving gate and pin
swapping
> as well as laying down tracks.  About the most I hope for from
Eagle's
> autorouter is to point out sections that are particularly
problematic.
> You can then manually route the remaining signals, or start with
> manually routing some signals and let the autorouter finish...
>
>
> > How do you get EAGLE to activate the 1layer.ctl file?
>
> When you're in the route dialog box, there is either a button or a
menu
> item for "loading" a set of route rules.
>
> BillW
>
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