autorouting setup

I´m really like Eagle software.  I believe that is a great software, very

easy to use and good enough for almost all problem involving PCB design.

My boards routes 100%.  It´s not my problem.

But I thing that trace alignment, trace distribuition and a reduced numbers

of vias are important too.  Why I would like to have better controll of

routing process.

I did several experiments, having routed some PCBs many times, changing some

parameters.  I realized that some rules are very important to get good

resoults:

1) Fine-pitch components should be aligned with the grid  (all pads);

2) Routing grid should be (at least) equal the small pitch of fine-ptich

components.  If the pitch is not a exact routing grid multiple (ex.:

pitch=0.50mm and routing grid = 0.25mm), we need a very small routing grid

to route same PCB.

3) DRC clearance should be small than pitch minus trace width (its a

physic´s problem, space is need for trace gets pad).  At least for the

clearance beetwen wires should be in according to this roule.

This few rules (some of them are obvious) and many others not listed could

be writen in a small tutorial to help people to get best resoults with

Eagle, without wasting time.

But, even using roules like those above, I´m sure that we can get more from

Eagle software.  If there are several paramaters available in routing

options, why don´t use them in our benefit ?  Why don´t clarify users about

meaning of this paramenters ?  For example, what does "costs" mean ?

Many people use Eagle because software´s qualities.  And I´d like to see

more and more people using Eagle.

Mainly, I´d like to see Eagle being used in the professional world, without

any distinction from others called "professionals softwares".  I´m sure

Eagle software has resources to make this real.  But Eagle people must teach

us to use all resources of Eagle software cans offer.

I´m really like Eagle software.  I believe that is a great software, very

easy to use and good enough for almost all problem involving PCB design.

My boards routes 100%.  It´s not my problem.

But I thing that trace alignment, trace distribuition and a reduced numbers

of vias are important too.  Why I would like to have better controll of

routing process.

I did several experiments, having routed some PCBs many times, changing some

parameters.  I realized that some rules are very important to get good

resoults:

1) Fine-pitch components should be aligned with the grid  (all pads);

2) Routing grid should be (at least) equal the small pitch of fine-ptich

components.  If the pitch is not a exact routing grid multiple (ex.:

pitch=0.50mm and routing grid = 0.25mm), we need a very small routing grid

to route same PCB.

3) DRC clearance should be small than pitch minus trace width (its a

physic´s problem, space is need for trace gets pad).  At least for the

clearance beetwen wires should be in according to this roule.

This few rules (some of them are obvious) and many others not listed could

be writen in a small tutorial to help people to get best resoults with

Eagle, without wasting time.

But, even using roules like those above, I´m sure that we can get more from

Eagle software.  If there are several paramaters available in routing

options, why don´t use them in our benefit ?  Why don´t clarify users about

meaning of this paramenters ?  For example, what does "costs" mean ?

Many people use Eagle because software´s qualities.  And I´d like to see

more and more people using Eagle.

Mainly, I´d like to see Eagle being used in the professional world, without

any distinction from others called "professionals softwares".  I´m sure

Eagle software has resources to make this real.  But Eagle people must teach

us to use all resources of Eagle software cans offer.