Absolutely great work. I've actually been working on a smaller version of this same idea. How many TLCs are you running? Each chip has 16 channels. And it looks like each LED consumes one channel. So 112/16 is 7 chips? My build is using 25 LEDs. The big difference is that my LEDs are common anode LEDs. So each color has its own channel on the TLC and are connected together across columns. My anodes are connected together down the rows. So I basically set my TLCs, pulse a row for 2ms or so, clear the row, set the TLC for the next row, pulse the next row, etc. The problem I'm running in to is my colors are not consistent at all. If I set my display to white, I get some white, some bluish, some greenish, some redish, some don't turn on much at all, blah blah blah. Any ideas why this might be happening? I guess switching to common cathode LEDs might be an easier fix...