Last month I built a new version with a 32x32 matrix that fits perfectly in a IKEA ribba frame.

This time I used Brians Loughs D1 matrix board to optimize the cabling. Have a look at his boards if you like to build something similar: https://www.tindie.com/products/brianlough/d1-mini-matrix-shield/ 

I updated the code to make it work with the recent versions of the libraries.

This one is powered by a old 12V power supply and a LM2596 buck converter.