*** Top Layer Jumpers to be Isolated ***

Thanks, I appreciate the guidance

I believe the right approach would be to extend bottom side traces in the

affected area and add a pad.  Then go to the top side, ripup the

appropriate connection and re-route to the new bottom side pad...

If this is incorrect in theory, let me know, otherwise I will try this

approach, thanks.

Gordon

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Tilmann,

Thanks - I will practice my manual adjustments

I have plenty of SS boards to do so learning this sounds like the best

thing.

Gordon

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On Fri, 27 Nov 2009, Gordon Hope wrote to us saying :

 

I believe the right approach would be to extend bottom side traces in the

affected area and add a pad.  Then go to the top side, ripup the

appropriate connection and re-route to the new bottom side pad...

 

That sounds like the wrong order to me. Starting from a trace with a via

in the middle of the top-side section, I would proceed as follows:

  - Identify which direction from the via has more bottom side space

  - rip-up the top side trace in that direction

  - manually route from the other end of that airwire, on top side

  - drop an intermediate point just short of the shared via

  - swap to bottom side

  - finish routing to the via

That last step will automatically create a new via to act as your second

pad. It's better than adding a pad manually because Eagle knows from the

get-go that it's part of the signal you're modifying.

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On 2009-11-27 08:47:01 +0100, Tilmann Reh <usenet2007nospam@autometer.de> said:

Paul Romanyszyn schrieb:

 

>> I don't think any setting will fix the autorouter results. Just clean up

>> the autorouter results manually. After a few minutes of manual

>> adjustments you should see that a few traces and jumpers may be able to

>> be eliminated.

 

I don't think that the autorouter will generate a useful result at all.

Learn manual routing - especially for single sided boards.

 

Tilmann

Tillmann is right. Real Men Route by Hand. Real Women do it too, google

for "ladyada routing Eagle" and you will find a great video where you

can learn a lot, just by watching.

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Eur van Andel  eur@fiwihex.nl

Eur van Andel wrote on Mon, 12 July 2010 10:15

Tillmann is right. Real Men Route by Hand.

That's silly, of course.  Do you refine your own silicon too?  Do you write

all your PC programs by hand in machine language?

The autorouter is tool, which has its advantages and disadvantages like any

other.  If you spend a little time with it to learn what it can and can't

do, and how to control it properly, you'll find it a useful tool that can

save hours of pointless manual work.

In this case as I understand it, the OP wants to create a single sided

board with wire jumpers as needed.  Yes, this can be done with the auto

router.  Set it up for a two layer board and make the bottom layer cost

really high.  Set up the via parameters so that they become nice pads for

the wire jumpers.  This will cause the autorouter to try to minimize the

number of jumpers and their length.

However keep in mind that the autorouter is just a tool.  It won't solve

all the problems for you, but if used properly can do a lot of the rote

work for you.  You will likely want to route some important traces manually

before auto routing, then do some cleanup afterwards.  The combination can

still take considerably less time than doing it all by hand.

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