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'[EE] Eagle routing rules ?'
2007\02\07@193530 by Peter P.

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Hi all,

is there a repository of Eagle routing rules like there is one for lbr's ?

thanks,
Peter


2007\02\08@124150 by Vasile Surducan

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On 2/7/07, Peter P. <spam_OUTplpeter2006TakeThisOuTspamyahoo.com> wrote:
>
> Hi all,
>
> is there a repository of Eagle routing rules like there is one for lbr's ?

Where is that please ?

Do you mean other than general routing rules used by hi class PCB houses ?

- minimum isolation route to route/via/SMD, SMD to SMD/trace/via/pad,
via to trace/via 0.004" (0.10mm)
- minimum drill to drill/trace/via isolation 0.008"(0.20mm)
- everything to board edge 0.010"(0.25mm) or better 0.020" (0.5mm)

2007\02\09@012821 by William Chops Westfield

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On Feb 7, 2007, at 4:35 PM, Peter P. wrote:

> is there a repository of Eagle routing rules

There are two "different" autorouter .ctl files, and one Design
rule set (.dru file) in the "misc" area of the CadSoft download page:
   http://www.cadsoft.de/download.htm

There is my own set of suggestions for hobbyist PCBs downloadable
(and explained in excruciating detail) at
   http://www.instructables.com/id/EZVIGHUBGCEP287BJB/

I've seen DRUs at some of the board houses as well.

Note that for most practical purposes, changing the design rules
has more dramatic and useful effects than changing the autorouter
parameters.

BillW

2007\02\09@094737 by Peter P.

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Vasile Surducan <piclist9 <at> gmail.com> writes:

> Where is that please ?
>
> Do you mean other than general routing rules used by hi class PCB houses ?
>
> - minimum isolation route to route/via/SMD, SMD to SMD/trace/via/pad,
> via to trace/via 0.004" (0.10mm)
> - minimum drill to drill/trace/via isolation 0.008"(0.20mm)
> - everything to board edge 0.010"(0.25mm) or better 0.020" (0.5mm)

I mean .ctl files for the autorouter. The .erc files are clea, I have problems
with the autorouter. It seems to be on drugs or something. I tested it with a
very simple 1-sided board that was laid out by hand by me (0 vias etc) and it
failed to route in extremely obvious places. So I started playing with the
'points' in the autorouter control settings and I made it sort of work but I'd
like to read a good tutorial on what all those weights do, and I'd like to see
what others did about it.

I have spent hours in the past to make a good .ctl file that produces good
1-sided boards with few jumpers, no jumpers under parts, and all jumpers
straight point to point. It takes a very long time to do this right.

So I was asking, is there a place where one can see several .ctl files ?

thanks,

Peter


2007\02\10@031527 by Vasile Surducan

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On 2/9/07, Peter P. <.....plpeter2006KILLspamspam@spam@yahoo.com> wrote:
{Quote hidden}

I can't help you. My opinion about eagle autoroute feature is known
(forget it), and definitely a single layer board manufatured with
autorouter under Eagle has limited chance to look as it should.
I've manufactured up to four layers board with Eagle, but I do not
recommend to anyone to use it for other than homebrew designs.

greetings,
Vasile

2007\02\10@041632 by Vitaliy

flavicon
face
Vasile Surducan wrote:
>> So I was asking, is there a place where one can see several .ctl files ?
>
> I can't help you. My opinion about eagle autoroute feature is known
> (forget it), and definitely a single layer board manufatured with
> autorouter under Eagle has limited chance to look as it should.
> I've manufactured up to four layers board with Eagle, but I do not
> recommend to anyone to use it for other than homebrew designs.

I second that.

Eagle's autorouter is dumb. I've spent many hours playing with the settings,
every time ending up rerouting the traces by hand. I've had very good
results with Electra, though -- it not only produces better routes, it also
does it much faster, allowing you to try many different combinations. It
does have a few bugs, though. *Sigh*

If the board is simple, it probably makes sense to just hand-route the
traces. It can even be fun. :)

Vitaliy

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