My current project is no going to be addressing a traditional matrix grid of LEDs in one central space. They are going to be physically distributed apart from the board, so I've been looking at how to wire these up and connect every thing together.
Given COL[1..8] and ROW[1..8], what is the easiest way to turn this into (COL, ROW) (COL, ROW), etc, etc so that I can take the lines or anode/cathode pairs of the board in a, in my case, 2x8 header and take them away.
In order to do this in stripboard, I'll need 8 COL and 8 ROW running the length of the board with jumper links in for every column entry (I'm working common row in the headers) for every header and this just seems overly complicated.
I sat there for an hour or so in eagle, trying to see if I could route it through a 2-sides PCB, but I couldn't see a neat way to do it.
Is there something obvious and poetically simple that I'm missing? How do the pros do it on bigger boards?
PS. I've got a schematic that explains this better - I'll try and upload that shortly.