kicad-developers team mailing list archive

[Seth Hillbrand <seth.hillbrand@xxxxxxxxx>]

Hi Darrell-

Please see https://bugs.launchpad.net/kicad/+bug/1466962

Pads on inner layers is a good idea but it needs a full implementation.
This would include (at a minimum) adding the pads to arbitrary layers (not
just In2_Cu), new netnames layers, GAL layers and zone filling
connection/keepout.

It's a bit of an undertaking but if you're interested in helping out with
this during the V6 cycle, you can take on the bug report and submit a patch
for it.

Best-
Seth

2018-04-16 8:55 GMT-07:00 Darrell Harmon <darrell@xxxxxxxxxxxxxxxxxxxxx>:

> Inner layer pads are useful for microwave filters implemented as Kicad
> modules, allowing tracks to connect to them.
>
> I've made a quick and dirty change to support the board I'm currently
> designing:
>
> --- a/pcbnew/class_pad.cpp
> +++ b/pcbnew/class_pad.cpp
> @@ -1248,6 +1248,11 @@ void D_PAD::ViewGetLayers( int aLayers[], int&
> aCount ) const
>          aLayers[aCount++] = LAYER_PAD_BK;
>          aLayers[aCount++] = LAYER_PAD_BK_NETNAMES;
>      }
> +    else if( IsOnLayer( In2_Cu ))
> +    {
> +        aLayers[aCount++] = LAYER_TRACKS;
> +        aLayers[aCount++] = LAYER_PADS_NETNAMES;
> +    }
>
>      // Check non-copper layers. This list should include all the
> layers that the
>
> The result looks like this (purple fingers are a polygon):
> https://harmoninstruments.com/images/innerpads.png
>
> This needs an IsOnInnerLayer function which does not appear to be in
> the existing source. Also, using LAYER_TRACKS gives gray pads. What
> would be the best way to handle this?
>
> DRC and generated gerbers appear to be correct.
>
> I brought this up in the past on the kicad.info forum:
> https://forum.kicad.info/t/component-with-pads-on-an-inner-layer-for-st
> ripline-microwave-filters/9375/5
>
> Thanks,
> Darrell Harmon
>
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