I've tried several board layouts, but unfortunately the autorouter has only reached 67%. I'd love it if someone could come up with a successful layout, but either way I am in need of tips on how to arrange a board that the autorouter can handle.
I've tried several board layouts, but unfortunately the autorouter has only reached 67%. I'd love it if someone could come up with a successful layout, but either way I am in need of tips on how to arrange a board that the autorouter can handle.
You may wish to post a jpg image of it too (helps people reading this site from a mobile device, or those who are not running EAGLE on their current computer).
Daniel Dobrosky <noreply-178531@element14.com> wrote:
Schematic:
I've tried several board layouts, but unfortunately the autorouter has
only reached 67%. I'd love it if someone could come up with a successful
layout, but either way I am in need of tips on how to arrange a board
that the autorouter can handle.
Route by hand. It's not taht hard .
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
-
Tel. 06151 162516 -
Fax. 06151 164321 -
Image of schematic: https://www.dropbox.com/s/o6p5b2vr4zk7hd9/SchematicImage.png
Image of preliminary board layout: https://www.dropbox.com/s/h8xbk6w6xwpputr/LayoutImage.png
You say hand-routing isn't that hard... is ther a method I can follow to minimize trial and error (i.e. "route power lines first" or something like that)?
On 05/04/2013 16:12, Daniel Dobrosky wrote:
Image of schematic:
https://www.dropbox.com/s/o6p5b2vr4zk7hd9/SchematicImage.png
Image of preliminary board layout:
https://www.dropbox.com/s/h8xbk6w6xwpputr/LayoutImage.png
You say hand-routing isn't that hard... is ther a method I can follow to
minimize trial and error (i.e. "route power lines first" or something
like that)?
--
To view any images and attachments in this post, visit:
http://www.element14.com/community/message/73382#73382
As example .brd file zipped, 100% routed with Freerouter, 39 via's (not
cleaned up). But I think the schematic you put on dropbox was missing a
connector.
Schematic.zip |
Apologies, I sneakily updated the .sch a little while after I posted the image files. How did you get freerouter to work with eagle?
https://www.dropbox.com/s/ri00610jbq5q9j0/BoardFINAL.png
Here it is, though the DRC failed merely due to the pin spacing on the LPC2138FBD64/01,15LPC2138FBD64/01,15. Maybe it will pass the BatchPCB DRC...
Hand-routed, by the way (as if you couldn't tell).
There is are several ULPs (just wrote a new one) to generate the DSN
input file for Freerouter. After routing in generates a script to update
the BRD file. Look in the Freerouting forum on its website.
Autorouting smartness / capabilities is very impressive.
http://www.freerouting.net/index.php?page=description
Robert
On 05/04/2013 18:57, Daniel Dobrosky wrote:
Apologies, I sneakily updated the .sch a little while after I posted the
image files. How did you get freerouter to work with eagle?
--
To view any images and attachments in this post, visit:
http://www.element14.com/community/message/73390#73390
For something this small, I personally wouldn't use the autorouter at all
As a general rule, route as much as you can on one layer, and only when you can't route anymore go to the second layer. Also, avoid 90˚ bends, 45˚ just looks better!
Just for reference, here's a board I routed almost completely by hand - once you get the hang of it, it's actually fun!