AVR-Chat

I use Eagle and it works for me!  I had to exchange emails with support and
got a file with better routing settings to make it do what I desired. I
think you can find these files on their support files site.  Once you get
the settings close it does a pretty good job. I always hand route my power
supply and critical signals and then let it autoroute the rest. I have some
fairly crowded boards and it did 100% on those.

Al Welch
PS I have found support to be pretty good at helping if you send them your
board files and explain what you want

-----Original Message-----
From: Jesper Hansen [mailto:jesperh@telia.com]
Sent: Tuesday, July 06, 2004 11:30 AM
To: AVR-Chat@yahoogroups.com
Subject: Re: [AVR-Chat] Re: OT: Eagle 4.11 layout editor


Autoroute is not magic !
You will always be able to do a better fit manually.

I don't think ANY autorouter can do better than an
experienced person routing manually.

Autoroute only, should really only be used on non-critical
boards.

/Jesper

----- Original Message -----
From: "Phil" <phil1960us@yahoo.com>
To: <AVR-Chat@yahoogroups.com>
Sent: Tuesday, July 06, 2004 7:17 PM
Subject: [AVR-Chat] Re: OT: Eagle 4.11 layout editor


> I find the eagle autorouter to be pretty dumb.  While you can control
> it via a fairly complex set of options, it still makes some pretty
> stupid decisions and will run some very circuitous traces. Also, it
> only routes 100% for the simplest boards.
>
> I use autorouting to see if my placement is reasonable and then ripup
> the routing and do it manually.   I am able to get much tighter
> layouts and shorter average traces with manual routing.  Also, you
> can see how to make changes in the schematic or layout to get a
> simpler board.  Pin swap is particularly useful to simplify routing.
> I've gotten single-sided boards where the autorouter gives up at like
> 70%.
>
> --- In AVR-Chat@yahoogroups.com, "Dave Miller" <dave@c...> wrote:
> > Hello,
> >
> >
> >
> > The Autorouter option is only available if you have a netlist.  A
> netlist
> > can either be imported or created when you draw the schematics.  I
> have
> > always used Eagle to draw my schematics then create a PCB from my
> > schematics.  This will create the necessary netlist file that will
> allow
> > autorouting.
> >
> >
> >
> > Thanks,
> >
> > Dave Miller
> >
> > Cipherlab
> >
> > 888.825.7713
> >
> >
> >
> >
> >
> >   _____
> >
> > From: jay marante [mailto:jaythesis@y...]
> > Sent: Tuesday, July 06, 2004 7:30 AM
> > To: AVR-chat@yahoogroups.com
> > Subject: [AVR-Chat] OT: Eagle 4.11 layout editor
> >
> >
> >
> > sorry for the OT. i just don't know where to ask these questions.
> >
> > i know a little about the eagle lay-out editor. i do manual tracing
> of PCB.
> > but i know there is this "auto-routing" thing where the PC routes
> the tracks
> > for you, like the protel design systems'.
> > i don't know if i understand what i've read correctly, but, am i
> right that
> > you can write a program (text) in eagle for all the connections or
> the
> > components to be connected like in VHDL instead of dragging
> components and
> > connect them yourself? if ever, how do i do that?
> > also, how do i auto-route?
> > and, how can i make a "gerber" (right spelling???) file for me to
> download
> > it into a milling machine?
> > or maybe, can someone lead me to a tutorial site?
> >
> > thanks for the help...
> >
> > -jay
> >
> >
> >
> >
> >
> > <http://us.adserver.yahoo.com/l?
> M=295196.4901138.6071305.3001176/D=groups/S=
> > :HM/A=2128215/rand=359347531>
>
>
>
>
>
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