In which a Xmas star is created using Red-Green-Blue Light Emitting Diodes.
I installed the star in my bedroom window. It looks fantastic from across the street but all I got was this spooky photo. It was too bright for the mostly dark scene.
The 50 RGB LEDS are mounted on a 20x30 foam bulletin board. It is easy to drill holes for them.
This shows back of the assembly. The LEDs share a three wire cable which provides 5vdc, 3 amperes. There is one signal wire to the Arduino controller which can select one LED and set it to any color. I use the sequence red-green-blue-white which repeats until all 50 LEDs are working. This happens so fast that the one-at-time selection is not visible.