KiCad

3 layers PCB

Asked by Hildo Guillardi Júnior

I want to create a three layer PCB but Pcbnew just give me the option of even numbers of layers. Is this because the housing procedures doesn't allow odd layer numbers or is it a issue?

Question information

Language:
English Edit question
Status:
Solved
For:
KiCad Edit question
Assignee:
No assignee Edit question
Solved by:
Seth Hillbrand
Solved:
Last query:
Last reply:
Revision history for this message
Best Seth Hillbrand (sethh) said : 		#1

There's extra effort involved in handling odd layers. For example, the extra layer has not pair, so placing a via doesn't automatically continue the trace on the paired layer -- it would need special code handling it.

The limited usefulness of tri-layer boards makes the extra code effort not as valuable as the the effort elsewhere. If, in the future, tri-layer or other odd-layer boards come into more widespread use, this might be worthwhile. That said, if someone generalizes the router to allow odd-layers, that patch would probably be accepted as long as it didn't cause other issues.

Revision history for this message
Hildo Guillardi Júnior (hildogjr) said : 		#2

Thanks Seth Hillbrand, that solved my question.