Hey guys.
I am designing a board that has 2 PCBs on top of each other and connected together by a Mezzanine connector.
In layout I place the two PCBs next to each other and separate them using slots and mouse bites.
now the female part of the Mezzanine connector is on one PCB and the male part is on the other PCB.
I am using the same nets for both connectors which is giving a non connected net error.
How can I solve this problem.
Welcome to the forum. If the tracks are not connected in the planar board because they are separated by slots, and you see some ratsnest lines across the slot, then they are not connected as far as KiCad is concerned. It has no knowledge of connectors, only tracks and vias. If the ratsnest lines are where you expect, you could ignore the error.
There is no other way other than ignoring the error?
Renaming the nets on one of the boards with a prefix or suffix
That is a good idea, Thanks.
Draw tracks on an internal layer that is not manufactured
That’s nasty and ingenious at the same time… I like it a lot. 
Just don’t forget to remove the file from the Gerber pack before sending to production.
I did it like this once. Drilled the holes at the narrow neck so that the top section could break off and be soldered onto the bottom section at right angles. Mouse bites - I guess …
Here is a better view from the pcb file. I see that I didn’t use a hidden layer. The pad holes were 1.4mm. The project was a RGB garden lights on sprung stalks that reacted to wind & touch.
So the holes will break into castellated holes?
They should not be on the same nets . . . make them different nets and the problem goes away.
They are different physically different PCBs when finally assembled . . . why should they have any common nets ? the PCBs are not connected together by tracks but by a connector.
Yeah, I ubderstand the logic now, I have prefixed the nets with a letter and its ok now, thanks guys
It’s one variation on the common desire to generate multiple boards from one project.
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