I am rather upset with myself.
I recently purchased ten (10) 8x8 red LED matrix. Wiring just one of them to be controlled by an Arduino using MAX7219 has been a pain.
Is there an easier way with different ICs?
I wish I had bought the modules where the 8x8 LED matrix is already mounted on a PCB with a MAX7219 and the three control lines brought out. ARGH.