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EAGLE User Support (English) Air Wires are not showing
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Related

Air Wires are not showing

Collins
Collins 10 months ago

I have taken an existing Eagle design and added some components and signals to the schematic. When I go to the PCB file, which is always opened with the schematic for back annotation, the parts have been placed but there are no air wires shown from those parts. How can I fix this?

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  • Collins
    Collins 10 months ago in reply to Collins +2
    Well look at that!. Yes, the unrouted layer had been turned off. Jumping into an existing design as a novice has been a challenge.
  • dougw
    dougw 10 months ago +1 suggested
    Be sure the connections on the schematic are properly made with "wires" not lines. The PCB will only show air wires if they are first connected on the schematic.
  • shabaz
    shabaz 10 months ago in reply to Collins +1 verified
    Yes that sounds correct. That was going to be the next thing I was going to ask : ) Bit of an unlikely thing, but has the "Unrouted" layer been switched off by accident? That would prevent them being…
  • shabaz
    0 shabaz 10 months ago

    Hi,

    You may need to insert some screenshots showing a portion of the circuit and the corresponding portion of the PCB.

    I suspect (not sure) that you may be using Wire (instead of net) and possibly may have changed the default grid and the signals may not have made contact on the schematic. But this is guesswork, I have no idea of your experience with EAGLE. Screenshots will help.

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  • dougw
    0 dougw 10 months ago

    Be sure the connections on the schematic are properly made with "wires" not lines. The PCB will only show air wires if they are first connected on the schematic.

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  • shabaz
    0 shabaz 10 months ago in reply to dougw

    Hi Doug,

    I think you mean the opposite, right? It's unfortunate naming, but the Net tool is the one that should be used, whereas the 'line' is created with the Wire tool (i.e. the tooltip calls it 'Wire'). Both will show air waves in certain conditions (i.e. when the grid is proper), however the Wire tool shouldn't be used, the Net tool is the one that's supported, Wire has some odd behaviour since it's not intended for it, (or at least it had odd behavior in old versions - don't know about new ones). 

    image

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  • Collins
    0 Collins 10 months ago in reply to shabaz

    image I have used the net wire

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  • Collins
    0 Collins 10 months ago in reply to shabaz

    imageimage

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  • Collins
    0 Collins 10 months ago in reply to dougw

    If I drag the component symbol the net wire moves with it, so it should be connected....correct?

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  • shabaz
    +1 shabaz 10 months ago in reply to Collins

    Yes that sounds correct. That was going to be the next thing I was going to ask : ) 

    Bit of an unlikely thing, but has the "Unrouted" layer been switched off by accident? That would prevent them being shown.

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  • Collins
    0 Collins 10 months ago in reply to shabaz

    My experience with Eagle is very limited, but with the help of some EAGLE tutorial videos I am gaining.

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  • Collins
    0 Collins 10 months ago in reply to shabaz

    I will check the unrouted layer.

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  • shabaz
    0 shabaz 10 months ago in reply to Collins

    If it's a hobby project, a possible option could be to move to KiCad. It has excellent EAGLE import capability, and KiCad is easier for beginners. I can recommend some web links and videos if you need that.

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