I have a very small PCB which is for SM LEDs and resistors. Simple design but there's a lot of +v connections which I'm struggling to fit on as there's a lot of LEDs and resistors crammed into a tiny space and so even vias are hard to fit on to route traces both sides.
It's for a model car dashboard so you can appreciate this is very small.
I was going to create a ground plane but there's far fewer ground traces required as the LEDs have a common ground but need separate +ve connections (Ardunio controlled)
Is there any reason why I couldn't create a power plane instead of a ground plane and route the ground traces rather than the other way round?
I've read about having both planes or just a ground plane but less about only having a power plane and wandered if this was a big no-no or just less common.