"Would Charlieplexing be prcaticle for this application, cutting down on the required number of componants?
You could cut the Microcontroller output down to 24 tri-state pins."

"Multiplexed."

"Multiplexed or charlieplexed LED arrays?"

"True"

"How do you think I got the solder mask and silkscreen on? And the tiny vias...."

"Idk...I used to etch boards in HS, you just need some chemicals. But you probably had it made."

"What do you think?"

"Did you etch this board, or have it made?"