Pad not connected on v8-rc2

leoheck · February 13, 2024, 5:12pm

Testing the v8-rc2

Found a pad that is not connected anymore. It was connected on kicad 7*.

Any ideas on what show I check to fix this?

RaptorUK · February 13, 2024, 5:16pm

Does DRC report it as an issue ? or is it just a visual anomaly ?

leoheck · February 13, 2024, 5:21pm

Yeah, I just found this by running the DRC. This was the first issue on that list.
And this is what it says (should have shared before).

leoheck · February 13, 2024, 5:31pm

This may be an issue with the custom shape since I could not see differences between this pad and the others.

Seth_h · February 13, 2024, 5:32pm

Can you attach the board here or in an issue report

leoheck · February 13, 2024, 5:33pm

Sure, let me try to reproduce the issue in a smaller board.

leoheck · February 13, 2024, 5:43pm

Here @Seth_h, custom_pad_issue.kicad_pcb (79.9 KB)

Seth_h · February 13, 2024, 5:47pm

Thanks! I see the issue. We’ll get this fixed.

Seth_h · February 13, 2024, 5:49pm

Here’s the issue:

Your pad connection is set to “None” If you change this to solid or parent or thermal, it gets connected.

leoheck · February 13, 2024, 9:14pm

Thank you. Changed the pad connection and that fixed it.

By the way, what will you fix? The default settings when the footprint does not have this setting setup yet?

Seth_h · February 13, 2024, 9:38pm

There’s nothing to fix in the code base as far as I know. You designed this pad to not have a connection and so it doesn’t. The fix is to change the pad connection in your footprint.

leoheck · February 13, 2024, 9:43pm

Ok. I haven’t designed this pad. Maybe someone who did it did not see this configuration. I personally never saw this. On Kicad 7 it was working as expected. The pad was connected to the copper pour.

fred4u · February 13, 2024, 10:30pm

Several dependencies here.
We do have a zone here with clearance set to 0, and a pad assigned to the same net.
When pad shape is set to Rectangular, and connection is set to None, with clearance 0 the zone fill will reach pad’s edges - just as in V7.
However if the pad shape is set to Custom (and still connection None), Kicad V8 despite “clearance 0” will enforce a minimum clearance that separates the pad from the zone.
With Kicad7 it wasn’t like that - regardless if the shape was Rect or Custom, the zone fill reached the pad with clearance 0. Maybe the change of behaviur between V7 and V8, or between Custom shape and Rect shape, should suggest some deeper verification, just to be sure it’s not a problem that will bite somewhere else.

system · May 13, 2024, 10:30pm

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