Here's my idea for an LED support board.
Place to accept cathode drive, series resistor and connect out to LED columns.
Place to accept gate/base drive, pull up the gate/base, and connect out to the anode layers.
USPS mail only takes a few days in the US, and not much longer internationally.
This board is 132 x 100mm, maybe I'll see if resistor can be squeezed to fit on a 100x100mm board for lower cost.
