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Missing air wire

autodeskguest

I have a prety much completed board with everything routed and I forgot a connector. I have similar connectors in the schematic so I copied one of the others and placed it and made a connection to it. The second pin of the connector is ground so I copied a grond symbol from elsewhere in the schematic and connected it to the connector. On the board view only the air wire to the non-ground pin is showing. The ground pin has no air wire. All the other ground connections had air-wires before I routed them. I tried deleting the connector and starting over. The connection to ground in the schamatic appears complete becasue I can move the connector or the ground symbol and the connection follows.

I tried "redraw" on the board. No luck. If I try to put a trace on the board to make the ground connection to the connector pin it complains it cannot back annotate and it must be done on the schematic which I guess means the connection is not there.

 

So where is the connection?

 

Sage

 

 

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  • Dave wrote:

    Ok. In the end that did it but I had to take the long way around.

     

    Since I didn't know when I was going to get an answer to my question I

    just placed a wire on the schematic from the connector pin to one of the

    other grounds as a work around insted of havingf a dedicated gnd for the

    pin. After I got your message I tried the rename command by selecting a

    wire on one of the ground connections and the command sucessfully

    changed all the N$26 nets to GND. But I had left the new connector pin

    still connected to the other ground. I disconnected that wire and placed

    a new ground symbol for the connector and connected it to the pin. It

    became N$22 and it would not rename. The error was something like cannot

    connect N$22 to GND.

    I had to go back to the other ground symbol and re-issue the command to

    rename ALL to GND even though the symbol I was working on was already

    GND from the last rename. It did change the new connection on the new

    GND symbol to GND net. So mission accomplished.

    Seems to me there a lot of wierd things like this that happen in Eagle

    that I guess you eventually remember how to work with but it's a bit

    frustrating for me as a first timer.

     

    THANKS for your help.

     

    Sage

     

    The supply symbols may complicate things. They have an net name to start

    with. If you start a net from a supply symbol it will pick up that net

    name. If you start from a pin it takes on the N$# value until you

    connect to a net with a different name.

    I add the net name label to the nets near the symbol pin.

    Paul R.

     

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  • Dave wrote:

    Ok. In the end that did it but I had to take the long way around.

     

    Since I didn't know when I was going to get an answer to my question I

    just placed a wire on the schematic from the connector pin to one of the

    other grounds as a work around insted of havingf a dedicated gnd for the

    pin. After I got your message I tried the rename command by selecting a

    wire on one of the ground connections and the command sucessfully

    changed all the N$26 nets to GND. But I had left the new connector pin

    still connected to the other ground. I disconnected that wire and placed

    a new ground symbol for the connector and connected it to the pin. It

    became N$22 and it would not rename. The error was something like cannot

    connect N$22 to GND.

    I had to go back to the other ground symbol and re-issue the command to

    rename ALL to GND even though the symbol I was working on was already

    GND from the last rename. It did change the new connection on the new

    GND symbol to GND net. So mission accomplished.

    Seems to me there a lot of wierd things like this that happen in Eagle

    that I guess you eventually remember how to work with but it's a bit

    frustrating for me as a first timer.

     

    THANKS for your help.

     

    Sage

     

    The supply symbols may complicate things. They have an net name to start

    with. If you start a net from a supply symbol it will pick up that net

    name. If you start from a pin it takes on the N$# value until you

    connect to a net with a different name.

    I add the net name label to the nets near the symbol pin.

    Paul R.

     

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