ripup and prefs for autorouter

Gene Heskett wrote:

Hi everybody, eagle-6.1 free newbie here.  Eagle newbie, never used

it till now.  Very old hand at electronics, 60+ years working in both

design and repair.

 

I have designed a 9 part, double sided board, 3 of the parts are

opto-interruptors but I find that the router wants to put connections

to it on the top side of the board.  I am feeding this to pcb2gcode

and milling the board on a small mill running what used to be emc but

which we were forced to rename to LinuxCNC a few weeks back.

 

My problem is that I cannot plate thru the component holes, so by the

time I run a piece of 30 gage kynar wire thru the hole and solder the

top, the solder prevents the opto device from sitting down on the

board so it can be bolted down.

 

That means that I need to specify to the auto router somehow, that

those 5 terminals on each of the 3 devices need to be wired from the

bottom without exception.  The 3 resistors and 3 diodes can be

soldered top and bottom as they are accessible to my soldering iron

from both sides. Small vias aren't a problem as long as they aren't

under these devices.

 

Perhaps an outline of a verboten area in the Tkeepout layer?  Likely

there are several ways to skin this long lived cat and I'm thinking

out loud.

 

Is there some way, perhaps even in that parts library description, to

tell the autorouter that this part can only be connected to on the

bottom, solder side of the board?  Perhaps by nuking the via outline

in layer 1, leaving only the leads through hole?

 

Or some similar workaround that would do the same thing by removing

the top layer from the autorouters "I can use this" mapping?

 

Thanks, Gene

 

--

Cheers, Gene

--

"There are four boxes to be used in defense of liberty:

soap, ballot, jury, and ammo. Please use in that order."

-Ed Howdershelt (Author)

--

Web access to CadSoft support forums at www.eaglecentral.ca.  Where

the CadSoft EAGLE community meets.

Hi Gene

You could place a rectangle on the tRestrict layer over your

opto-interruptors. The autorouter will then not use that area to connect to

the TPH pads.on the top layer and so be forced to the bottom layer.

vRestrict is used in a similar fashion to prevent vias in an area.

Additionally  bRestrict is for areas on the bottom of the board.

You can add these restricted areas to your library parts if you want this on

all future boards

Warren

--

Viewed / responded via the newsgroup at

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Gene Heskett wrote:

Hi everybody, eagle-6.1 free newbie here.  Eagle newbie, never used

it till now.  Very old hand at electronics, 60+ years working in both

design and repair.

 

I have designed a 9 part, double sided board, 3 of the parts are

opto-interruptors but I find that the router wants to put connections

to it on the top side of the board.  I am feeding this to pcb2gcode

and milling the board on a small mill running what used to be emc but

which we were forced to rename to LinuxCNC a few weeks back.

 

My problem is that I cannot plate thru the component holes, so by the

time I run a piece of 30 gage kynar wire thru the hole and solder the

top, the solder prevents the opto device from sitting down on the

board so it can be bolted down.

 

That means that I need to specify to the auto router somehow, that

those 5 terminals on each of the 3 devices need to be wired from the

bottom without exception.  The 3 resistors and 3 diodes can be

soldered top and bottom as they are accessible to my soldering iron

from both sides. Small vias aren't a problem as long as they aren't

under these devices.

 

Perhaps an outline of a verboten area in the Tkeepout layer?  Likely

there are several ways to skin this long lived cat and I'm thinking

out loud.

 

Is there some way, perhaps even in that parts library description, to

tell the autorouter that this part can only be connected to on the

bottom, solder side of the board?  Perhaps by nuking the via outline

in layer 1, leaving only the leads through hole?

 

Or some similar workaround that would do the same thing by removing

the top layer from the autorouters "I can use this" mapping?

 

Thanks, Gene

 

--

Cheers, Gene

--

"There are four boxes to be used in defense of liberty:

soap, ballot, jury, and ammo. Please use in that order."

-Ed Howdershelt (Author)

--

Web access to CadSoft support forums at www.eaglecentral.ca.  Where

the CadSoft EAGLE community meets.

Hi Gene

You could place a rectangle on the tRestrict layer over your

opto-interruptors. The autorouter will then not use that area to connect to

the TPH pads.on the top layer and so be forced to the bottom layer.

vRestrict is used in a similar fashion to prevent vias in an area.

Additionally  bRestrict is for areas on the bottom of the board.

You can add these restricted areas to your library parts if you want this on

all future boards

Warren

--

Viewed / responded via the newsgroup at

news.cadsoft.de

Thanks Warren, I figured there had to be a way.

Next question: Is there also a global ripup everything & I just can't find

it?  Right now it takes about 15 minutes of one segment at a time ripup's

to start from scratch if I want to make sure I got them all.

Thanks again, I will do that when I'm next awake.  Its about signoff time

for tonight.

--

Cheers, Gene

--

"There are four boxes to be used in defense of liberty:

soap, ballot, jury, and ammo. Please use in that order."

-Ed Howdershelt (Author)

--

Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

On 02/11/2012 11:48 PM, Gene Heskett wrote:

Thanks Warren, I figured there had to be a way.

 

Next question: Is there also a global ripup everything&  I just can't find

it?  Right now it takes about 15 minutes of one segment at a time ripup's

to start from scratch if I want to make sure I got them all.

 

Thanks again, I will do that when I'm next awake.  Its about signoff time

for tonight.

Group the whole board then ripup should do it. I you rip up the air wire

after the segment is ripped up it will delete more or all of the

remaining segments of that net.

Since you are just starting spend some time in the on line help and find

a tutorial. If you know the proper search terms almost ever question you

will have has been answered several times except for new changes in

version 6.

Paul R.

Gene Heskett wrote:

Thanks Warren, I figured there had to be a way.

 

Next question: Is there also a global ripup everything & I just can't

find it?  Right now it takes about 15 minutes of one segment at a

time ripup's to start from scratch if I want to make sure I got them

all.

Key into the command line

RIPUP;

Note the semicolon at the end.

It will then confirm  you want to rip up all the routed signals.

You can just rip up particular signals as well.

Check HELP/Ripup

Look under 'Editor Commands'

All the best.

Warren

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Viewed / responded via the newsgroup at

news.cadsoft.de

Chastisement duly noted.  I have a copy of the printed manual, courtesy Ed

Nisely, who likes the war stories I can tell from a 65 year lifetime of

chasing electrons around.

However much of the language/options available in the autorouter docs

starting on about page 188 of that tome, may as well be written in swahili

as I've been speaking, and trying to write in english for 77 years, or

simply aren't mentioned either at all, and relatively little in the way of

actual effects on the results. But I may have just found most of it.  The

problem?  Those items shown in the autorouter config screen are all

prefaced with a lower case character in this manual that I presume is a

family marker, but is not shown on the screen.  Another foible I just

learned.

I'll get there eventually, or fall over trying. Diabetics don't have

much of a warranty

Thanks Warren.

--

Cheers, Gene

--

"There are four boxes to be used in defense of liberty:

soap, ballot, jury, and ammo. Please use in that order."

-Ed Howdershelt (Author)

--

Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

Gene Heskett wrote:

Chastisement duly noted.  I have a copy of the printed manual,

courtesy Ed Nisely, who likes the war stories I can tell from a 65

year lifetime of chasing electrons around.

 

However much of the language/options available in the autorouter docs

starting on about page 188 of that tome, may as well be written in

swahili as I've been speaking, and trying to write in english for 77

years, or simply aren't mentioned either at all, and relatively

little in the way of actual effects on the results. But I may have

just found most of it.  The problem?  Those items shown in the

autorouter config screen are all prefaced with a lower case character

in this manual that I presume is a family marker, but is not shown on

the screen.  Another foible I just learned.

 

Not a chastisement at all. Simply wished to efficiently point you in the

right direction.

As you said you are a newbie and have at hand a printed manual the following

may be knew knowledge.

A PDF version of a manual and tutorial can be found in the DOC folder of

your installation

Searching the PDF if far more efficient when finding information.

Raw, straight to the point information,  can be found in the HELP on each

editor window.

If you used version4 or earlier previously, it had poor HELP

The HELP in v5 and v6 is very much better. Once you have 'tuned in' to the

conventions and foibles of Eagle you can find the answers.

What is missing is more advanced  case studies that walk you through

particular methodologies.

I recommend you get to grips with understanding the interaction of the

autorouter with net classes and the Design Ruler Checker settings.

Way back in one of the forums here there was a good explanation on costs in

the autorouter and optimization. Maybe worth a search.

Hope this helps

Warren

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