Time will always be“of the essence” for professional engineers and amateur enthusiasts alike. This can certainly be said about the process of designing circuits involving Light Emitting Diodes (LEDs).

I built a 16 x 9 array of modules using discreet R, G and B LEDs, and a pic to decode DMX512 to drive them. I've updated the diagram to use the Arduino 5V to run the chips instead of the 3.3V and ...