connecting a Signal to a via in board editor

"Jorge Garcia" <jorge@cadsoftusa.com> wrote in message

news:hq2lfo$qr5$1@cheetah.cadsoft.de...

On 4/12/2010 9:07 PM, Martin Eder wrote:

Hi,

 

Is there a trick to connect a signal to a via?  I can connect signals

between packages, but if I place a via and try to connect a signal to

it, it doesn't take. I had to create a pad as a part to get it to

work.

 

Normal behavior?

 

v4.16

 

Thanks

Martin

 

 

 

Hi Martin,

 

I've run into this problem trying to route traces to Power pads that

leave my board.

 

You can run airwires between ICs and library components but not simple

pads that you place on the board.

 

My techniques is this:

 

Let's say I have a Timer IC whose +V pin I need to connect to the +V

pad on my board.

 

1) Use airwires to connect the +V pin to some other pin or component

(preferably one that not to close to the V+ pin).

2)Use the Route command and start routing from pin +V, but head

towards +V pad or via.

3) Using the wire command start at the V+ PAD on the board and connect

this wire to the traces you have already routed.

4) Eagle will ask if the two signals go together, select the name you

want the joined signal to have and click ok.

5) Now if you check name you'll see that both the Timer +V pin and the

+V pad are all one signal. If not then check the PAD signal name it

should be the same the wire you used to connect it to the traces you

routed.

6) Now that the connection is complete you can delete the dummy

airwire.

 

Hope this helps.

 

Jorge Garcia

Cadsoft Computer

 

 

I pondered this approach, but I found it easy to just create a pad as a

part.  Thanks for the suggestion.

I wasn’t expecting  such a road block with this. Thought there might be

a easy way.

FYI, I was just trying to connect connector shell mount/gnd signals to a

pad so that there is a  option to ground them.

Typically you don’t see them in net lists, at least the Netlist I have

from a clients orcad.

Cheers

"Jorge Garcia" <jorge@cadsoftusa.com> wrote in message

news:hq2lfo$qr5$1@cheetah.cadsoft.de...

On 4/12/2010 9:07 PM, Martin Eder wrote:

Hi,

 

Is there a trick to connect a signal to a via?  I can connect signals

between packages, but if I place a via and try to connect a signal to

it, it doesn't take. I had to create a pad as a part to get it to

work.

 

Normal behavior?

 

v4.16

 

Thanks

Martin

 

 

 

Hi Martin,

 

I've run into this problem trying to route traces to Power pads that

leave my board.

 

You can run airwires between ICs and library components but not simple

pads that you place on the board.

 

My techniques is this:

 

Let's say I have a Timer IC whose +V pin I need to connect to the +V

pad on my board.

 

1) Use airwires to connect the +V pin to some other pin or component

(preferably one that not to close to the V+ pin).

2)Use the Route command and start routing from pin +V, but head

towards +V pad or via.

3) Using the wire command start at the V+ PAD on the board and connect

this wire to the traces you have already routed.

4) Eagle will ask if the two signals go together, select the name you

want the joined signal to have and click ok.

5) Now if you check name you'll see that both the Timer +V pin and the

+V pad are all one signal. If not then check the PAD signal name it

should be the same the wire you used to connect it to the traces you

routed.

6) Now that the connection is complete you can delete the dummy

airwire.

 

Hope this helps.

 

Jorge Garcia

Cadsoft Computer

 

 

I pondered this approach, but I found it easy to just create a pad as a

part.  Thanks for the suggestion.

I wasn’t expecting  such a road block with this. Thought there might be

a easy way.

FYI, I was just trying to connect connector shell mount/gnd signals to a

pad so that there is a  option to ground them.

Typically you don’t see them in net lists, at least the Netlist I have

from a clients orcad.

Cheers

OK, how about this approach:

Do a CTRL-route from some point on the signal where  you want to

connect the via.  A CTRL-route allows you to start anywhere, even if

there are no airwires or unconnected nets.  Continue with that

CTRL-route to where you want to place a via.  Then change layers and

continue a little ways further in the new layer, then hit ESC to stop

the routing.  This will give you a trace, a via, and then a trace on

the new layer that goes nowhere.  Now use rip-up to get rid of the

trace on the new layer.  Finally, use INFO to change the properties of

the via as needed to make it as big as a pad, or whatever you want to

do with it.

Robert Scott

Real-Time Specialties

Ypsilanti, Michigan