What he needs is not difficult - just 13 MAX7219's and 400 2-color LEDs, or 2 LEDs wired together as a 2-color LED.
Each MAX7219 driving 32 LED pairs. Piece of cake. No PWM needed.
What he needs is not difficult - just 13 MAX7219's and 400 2-color LEDs, or 2 LEDs wired together as a 2-color LED.
Each MAX7219 driving 32 LED pairs. Piece of cake. No PWM needed.