Library and Manual routing questions

On 10/4/2011 3:03 AM, magooo wrote:

Hello!

I am new to Eagle but I am familiar with other PCB design tools. Therefore I have a couple of questions related to the PCB board editor.

 

1. If for any reason I would like to modify some particular package drawing (e.g. SOT-23) and apply this change to ALL components in ALL libraries that use the SOT-23 package, is there an easy way to do it? Or do I have to go through all libraries and components, one by one and import the modified package drawing?

2. As far as I understand, the manual routing tool has no such feature as "push and shove", known from other CAD tools. Eagle will allow me to draw a PCB trace over an existing one on the same layer, without trying to push away the existing trace and without immediately issuing a "short circuit" warining (DRC will eventually tell me about the problem). Also, Eagle will not attempt to keep the traces connected when moving a device package in the board layout. Does this correspond to reality and if yes, are there plans to introduce such features in V6? Do you have any suggestions on how to come close to these features with what is available in Eagle today?

 

Thank you for your kind explanations!

 

P.S. sorry for double posting: originally I have posted this question in the wrong discussion thread (and effectively, nobody answered).

 

Hello,

For question 1.

You could maybe use the run-loop-all-lbr-ulp.ulp or

run-loop-all-lbr-script.ulp to execute a ULP or script which checks if

there is a current SOT-23(as to your example) package within the

library, if one is found it would delete it and then create the SOT-23

to your specifications using a script.

Obviously you would have to write the ULP and scripts for checking and

creating the new version of the SOT-23.

For question 2.

You are correct EAGLE does not offer push and shove routing, and as far

as I know it is not slated to be included in version 6. The closest

thing available now is to use the Follow-me router.

The follow-me router is basically a combination of manual and automatic

routing sometimes called assisted routing. Basically you click on the

ROUTE icon and then if you look at the toolbar directly above the

command line and to the right of the wire bends you will see the two

follow me router modes.

Basically what you do is click on the air wire you wish to route, and

depending on the mode EAGLE will route the entire trace or just up to

your mouse cursor. Now the route will change dynamically with your mouse

cursor and it will not allow a violation of DRC, the follow-me router

will adjust the traces automatically to make sure no DRC violations are

incurred.

hth,

Jorge Garcia