Beginner at eagle, dual layering help

On 12/01/15 18:06, Daniel Drexel wrote:

Hello,

 

I am currently working on my first project in Eagle, of which

incorporates five passive components, a small weather station sensor,

and an ATMEGA328p TQFP.

 

All of the items I am using are surface mount, making it difficult to

route all on the top layer without any overlap. I therefore decided to

use vias, send a top layer route to the via, then run another signal via

the bottom layer from there to another via, then connect again a top

layer route and send it to the associated pin. However whenever I

attempt to connect a bottom layer route to the via, I get the error

message "Can't set via to layer 16 at (x, y)".

 

What am I doing wrong here? Is my plan even possible to execute? I am

very new to this, please go easy on me

 

I think what you're doing wrong is trying to do work yourself that Eagle

will just handle. For example, you say you're "sending the top layer

route to the via". This is wrong. It suggests you're placing vias then

fiddling with their attributes then trying to route through them. That's

just not how it's supposed to work.

This is how you should work:

Start your route at the pad. You will get a top layer trace. Route it to

the open space where a via can be placed. Click there, then

middle-click. Your trace is now on the bottom layer. Continue routing.

When you click on the next route point, Eagle will automatically put

the via where it's needed. Job done, no meddling.

When routing with via's you can use two methods:

1. Place a short section or wire on the top layer and then switch the layer to the bottom and a via will automatically be placed.  Note the key is you must route a short section on the top first.

2. Manually place a via and make sure you rename it to the net that you are trying to route and ratsnest will connect it for you.

Rob Pearce wrote:

On 12/01/15 18:06, Daniel Drexel wrote:

Hello,

 

I am currently working on my first project in Eagle, of which

incorporates five passive components, a small weather station sensor,

and an ATMEGA328p TQFP.

 

All of the items I am using are surface mount, making it difficult to

route all on the top layer without any overlap. I therefore decided to

use vias, send a top layer route to the via, then run another signal via

the bottom layer from there to another via, then connect again a top

layer route and send it to the associated pin. However whenever I

attempt to connect a bottom layer route to the via, I get the error

message "Can't set via to layer 16 at (x, y)".

 

What am I doing wrong here? Is my plan even possible to execute? I am

very new to this, please go easy on me

 

 

I think what you're doing wrong is trying to do work yourself that Eagle

will just handle. For example, you say you're "sending the top layer

route to the via". This is wrong. It suggests you're placing vias then

fiddling with their attributes then trying to route through them. That's

just not how it's supposed to work.

 

This is how you should work:

Start your route at the pad. You will get a top layer trace. Route it to

the open space where a via can be placed. Click there, then

middle-click. Your trace is now on the bottom layer. Continue routing.

When you click on the next route point, Eagle will automatically put

the via where it's needed. Job done, no meddling.

And in the board editor, be sure you've actually defined a two-layer board

with vias in the DRC layers dialog, eg, (1*16).

Note that the single most common mistake made by those new to Eagle (or

anything else, for that matter) is to not work through the tutorial, slowly,

first.

Bob

I completely agree with the people before,

The easiest way to learn and will just take a couple of hours is watch a couple of videos.

https://www.youtube.com/results?search_query=eagle+tutorial