KiCad unconnected while connected by footprint?

Question

I have a footprint which provides VDD in two places on the board.

Specifically, it's a CR2032 battery retainer:

I then bring that VDD to the top with vias and I have a big pouring of that VDD.

However, that pouring is broken in 2. The left is not connected to the right.

If feel it's even better in some way because there is no VDD "loop" on my board, but it makes KiCad complain that it's somehow unconnected (you can see the little line between one of the VDD vias and the VDD pad of the decoupling capacitor in the middle of the image).

1. Shouldn't KiCad know that it is connected through the footprint, as both pads have the same ID?

2. I feel like ignoring this error, is this a good idea?

Answer 1

In answer to your two questions:

1. Shouldn't kicad know that it is connected through the
   footprint as both pads have the same ID?

The short answer is 'no' because this breaks testing assumptions for board manufacturers that do e-tests. For a longer answer with some discussion about how KiCad might address this in the future, you can can read the related issue report at https://gitlab.com/kicad/code/kicad/-/issues/2558

2. I feel like ignoring this error, is this a good idea?

This is the correct solution with KiCad version 6.

Answer 2

You need to regard the battery holder as a 4 pin device like this: -

Then, connect all four pins to Vdd in your schematic.

Just regard it as an IC (in other words).

Answer 3

Two methods, neither of which is "good practice", and both of which work, are:

• Provide an ultrafine track that will always etch away.

• Have a track with a hole drilled in it.

The manufacturer needs to know that either of these actions are intentional if used.
Only do things like this if "proper" solutions are for some reason impractical.