Note: This is a non-isolated Arduino-DMX adapter circuitry, so there is no galvanic isolation between the master device and the rest of DMX device (s). The pin 2 (RE) of MAX485 controls whether the ...

This setup allowed [Alex] to control all 128 LED’s with just seven bits, but it was too slow for him. His solution was to control the multiplexers with counter IC’s.

Arduino continues to impress as a platform for makers. For instance, Plum Geek Robotics has developed a DIY programmable light - with the oft-stated intention of teaching young people - the Plumduino.