Actions
Forum Thread Details
  • State Verified Answer
  • Replies 11 replies
  • Answers 2 answers
  • Subscribers 181 subscribers
  • Views 4579 views
  • Users 0 members are here
Related

Eagle 8.5.1 Air Wire Errors

rarndt

With Eagle 8.5.1 I have air wire errors that I can not figure out how to correct (see attached).  I am modifying a PWB created in previous Eagle version, by adding one tri-color LED.  Both pins 1 (Din) and 2 (VCC) of the LED show air wires, and it is so small that I can't zoom in to see it.  Pin 3 (GND) routes fine to the GND polygon.  I have tried re-routing these two lines many times, with exact same results.  This LED is the only thing I have added to this board using Eagle 8.5.1.  Guidance please.

Attachments:
image
Parents
  • 0

    On 31/12/2017 4:28 a.m., Richard Arndt wrote:

    With Eagle 8.5.1 I have air wire errors that I can not figure out how to correct (see attached).  I am modifying a PWB create in previous Eagle version, by adding one tri-color LED.  Both pins 1 (Din) and 2 (VCC) of the LED show air wires, and it is so small that I can't zoom in to see it.  Pin 3 (GND) routes fine to the GND polygon.  I have tried re-routing these two lines many times, with exact same results.  Guidance please.

     

    --

    To view any images and attachments in this post, visit:

    https://www.element14.com/community/message/232872

     

    Attachments:

    airwire.PNG

     

     

    Hi Richard

     

    I suggest that you open the schematic and move the led and observe if

    the nets remain attached to the pins. Doing this could show up nets that

    are not connected to the pins. If that looks OK, next run a ERC check to

    see if that reveals any clues. Not likely as airwires seem to be present

    and so Eagle believes an airwire is justified between two points.

     

     

    Next, back on the board, move the LED ( you may care to record its XY

    location so you can return it to the current location later.

     

    When the led is moved do the routed traces at the pins move with the

    led? If not another question arises, did you use the ROUTE command to

    add the traces  which will snap to pads and airwire ends or use the WIRE

    command which wont snap to airwire ends and so you can be left with tiny

    airwires?

     

    With the LED moved, run the DRC, Hope fully the airwires may be larger

    now and then you will be able to get INFORMATION (net name) from them.

     

    Then I would try to pick them up with a route command. CliCk ROUTE and

    then click on the end of the airwire. Then drag out a route to somewhere

    convenient so you can then learn something about the signal name of the

    airwire.

     

    I assume this is a double sided board. Check you have the layers defined

    correctly in the DRC.

     

    Questions: Is the schematic and Board consistent?

     

    HTH

    Warren

     

     

     

    --

    ... use NNTP://news.cadsoft.de and a functional news reader like

    Thunderbird!

     

    ---

    This email has been checked for viruses by Avast antivirus software.

    https://www.avast.com/antivirus

     

     

Reply
  • 0

    On 31/12/2017 4:28 a.m., Richard Arndt wrote:

    With Eagle 8.5.1 I have air wire errors that I can not figure out how to correct (see attached).  I am modifying a PWB create in previous Eagle version, by adding one tri-color LED.  Both pins 1 (Din) and 2 (VCC) of the LED show air wires, and it is so small that I can't zoom in to see it.  Pin 3 (GND) routes fine to the GND polygon.  I have tried re-routing these two lines many times, with exact same results.  Guidance please.

     

    --

    To view any images and attachments in this post, visit:

    https://www.element14.com/community/message/232872

     

    Attachments:

    airwire.PNG

     

     

    Hi Richard

     

    I suggest that you open the schematic and move the led and observe if

    the nets remain attached to the pins. Doing this could show up nets that

    are not connected to the pins. If that looks OK, next run a ERC check to

    see if that reveals any clues. Not likely as airwires seem to be present

    and so Eagle believes an airwire is justified between two points.

     

     

    Next, back on the board, move the LED ( you may care to record its XY

    location so you can return it to the current location later.

     

    When the led is moved do the routed traces at the pins move with the

    led? If not another question arises, did you use the ROUTE command to

    add the traces  which will snap to pads and airwire ends or use the WIRE

    command which wont snap to airwire ends and so you can be left with tiny

    airwires?

     

    With the LED moved, run the DRC, Hope fully the airwires may be larger

    now and then you will be able to get INFORMATION (net name) from them.

     

    Then I would try to pick them up with a route command. CliCk ROUTE and

    then click on the end of the airwire. Then drag out a route to somewhere

    convenient so you can then learn something about the signal name of the

    airwire.

     

    I assume this is a double sided board. Check you have the layers defined

    correctly in the DRC.

     

    Questions: Is the schematic and Board consistent?

     

    HTH

    Warren

     

     

     

    --

    ... use NNTP://news.cadsoft.de and a functional news reader like

    Thunderbird!

     

    ---

    This email has been checked for viruses by Avast antivirus software.

    https://www.avast.com/antivirus

     

     

Children
No Data