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'[PIC]: Eagle Auto route'
2002\05\11@191246 by Tal Bejerano - AMC

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Hi All

ok.. I have a complex schematic and I want to do auto route.
I start the auto route and the process begin
the final result are too many unrouted tracks..
my question is:
how I start a new auto route? playing with options/parameters don't give any
better results
deleting the board and start new board auto route force me to place the
component in place again.
what  can I do to start auto route without all this mess?
what are the differences in the direction signs? "/ \ * . |"
if someone can explain in details I'll appreciate it.

Regards

Tal Bejerano
AMC - ISRAEL

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2002\05\11@192533 by David P. Harris

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Use the Group tool to select all the traces in the board view, then  use the
Ripup tool, but RIGHT click the board, all the traces should revert to
air-wires.  Also reroute with the Routing Grid set to 10 (I think the default is
50, and that is usually too big).
David

Tal Bejerano - AMC wrote:

{Quote hidden}

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2002\05\11@200531 by Olin Lathrop

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> ok.. I have a complex schematic and I want to do auto route.
> I start the auto route and the process begin
> the final result are too many unrouted tracks..
> my question is:
> how I start a new auto route? playing with options/parameters don't give
any
> better results
> deleting the board and start new board auto route force me to place the
> component in place again.
> what  can I do to start auto route without all this mess?
> what are the differences in the direction signs? "/ \ * . |"
> if someone can explain in details I'll appreciate it.

To delete an existing route, use RIPUP ALL.  Autorouting in general is a
complicated subject, and the Eagle manual contains a reasonable bit of
information on it.  You really do need to read the manual.  The autorouter
is not intended to be an "idiot proof" feature.

If you have too many unroutable traces, then you may need to reduce the
track width closer to the PC house limit and make the routing grid finer.
However, you can only throw so much brute force at it before the results
will taper off.  In the end a good layout is the most important single
factor.  If you've done all the right things and it's still not routable,
then consider adding a layer or two (For example, there is no point to a 3
layer board.  The board house will probably use a 4 layer process and charge
you accordingly anyway.).

So far I've been quite impressed by the Eagle autorouter.  I've gotten it to
100% route all my boards, although I had to be an active participant,
especially on the a couple of the tougher ones.  I also use a lot more
optimization passes with parameters varying from pass to pass.  Although
this has nothing to do with the routability (this is determined in the first
pass), it can make a large difference in the number of vias.  On a recent
board, the first pass created over 1000 vias although the final route ended
up using only 170.  You won't get these kind of results using the Eagle
defaults.


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(978) 742-9014, http://www.embedinc.com

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2002\05\11@223822 by Stefano

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before reducing the dimension of the traces, you might try to change the
directional organization of the routing. There are two menus (left up)
with TOP and BOTTOM preferred direction. CHoose the star * and see how
much it helps. Then start decreasing the number 50. Go to 30, 20 and below
in steps of one... DO not choose a parameter too small (5 or 8) otherwise
traces are too thin and close each other.

Stefano Curtarolo



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2002\05\12@022038 by Tal Bejerano - AMC

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10x 4 help guys! it really help me!
where all of u got the manuals? i can't find any....:-(

Regards

Tal Bejerano
AMC - ISRAEL


{Original Message removed}

2002\05\12@024225 by David Harris

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Hi-
Try my Swiki page at:  http://eagletips.swiki.net/1
Also go to the USA website and download the maual.  The built-in HELP is usually
quite useful too.
David

Tal Bejerano - AMC wrote:

> 10x 4 help guys! it really help me!
> where all of u got the manuals? i can't find any....:-(
>
> Regards
>
> Tal Bejerano
> AMC - ISRAEL
>
> {Original Message removed}

2002\05\12@025059 by Philip Pemberton

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"David P. Harris" <KILLspamdpharrisKILLspamspamTELUS.NET> said:
> Use the Group tool to select all the traces in the board view, then  use
the
> Ripup tool, but RIGHT click the board, all the traces should revert to
> air-wires.  Also reroute with the Routing Grid set to 10 (I think the
default is
> 50, and that is usually too big).
> David
Here's an easier way - type "ripup;" (with the semicolon) in the Command
box. Press enter and confirm that you want to rip up every track, then wait
until EAGLE has finished nuking them.

HTH.
--
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http://www.philpem.btinternet.co.uk/

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2002\05\12@155125 by Olin Lathrop

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> Here's an easier way - type "ripup;" (with the semicolon) in the Command
> box. Press enter and confirm that you want to rip up every track, then
wait
> until EAGLE has finished nuking them.

Even easier, type RIPUP ALL, which I think can be abbreviated to "RIP ALL".


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(978) 742-9014, http://www.embedinc.com

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2002\05\12@172224 by Tal Bejerano - AMC

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RIP UP All or Rip All doesn't work I get a message:" No name ALL"
but deleting with right button is not too difficult :-)))

Regards

Tal Bejerano
AMC - ISRAEL


{Original Message removed}

2002\05\12@175627 by Bob Ammerman

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----- Original Message -----
From: "Tal Bejerano - AMC" <spamBeGonekooterspamBeGonespamZAHAV.NET.IL>
To: <TakeThisOuTPICLISTEraseMEspamspam_OUTMITVMA.MIT.EDU>
Sent: Saturday, May 11, 2002 8:04 PM
Subject: [PIC]: Eagle Auto route


> Hi All
>
> ok.. I have a complex schematic and I want to do auto route.
> I start the auto route and the process begin
> the final result are too many unrouted tracks..
> my question is:
> how I start a new auto route? playing with options/parameters don't give
any
> better results

RIPUP;

> deleting the board and start new board auto route force me to place the
> component in place again.
> what  can I do to start auto route without all this mess?
> what are the differences in the direction signs? "/ \ * . |"

These tell the router what 'primary' direction to use for traces on a given
layer.

> if someone can explain in details I'll appreciate it.

Try setting a finer grid:

GRID 0.0125;

or

GRID 0.01

or

GRID 0.005


Bob Ammerman
RAm Systems

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2002\05\12@192134 by Mirko Bakocevic

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rip;

> RIP UP All or Rip All doesn't work I get a message:" No name ALL"
> but deleting with right button is not too difficult :-)))
>
> Regards
>
> Tal Bejerano
> AMC - ISRAEL
>
>
> {Original Message removed}

2002\05\13@103156 by Olin Lathrop

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> RIP UP All or Rip All doesn't work I get a message:" No name ALL"
> but deleting with right button is not too difficult :-)))

Sorry, I was going from memory and got it confused with different software.
I just verified it in Eagle, and the original poster had it right.  Type
"RIP;".  This pops up a dialog that says something like "I know this is what
you want to do, but since you're just a dumb user you have to confirm that
you really really want to delete all the traces so that they will be
irrevocably be forever gone.  So, are you truly really really sure you
really want to blast your whole design, everything on the disk, and all
papers on your desk, in the file cabinet, and withing 2 miles to oblivion?".
Just hit ENTER, which defaults to YES.


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Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

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2002\05\15@060818 by Hugo Harming

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Or you could just click the RIPUP button and then the little traffic light icon. This rips up all routed wires.

HTH, Sluggo


~~ {Original Message removed}

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