this is my actual christmas project. A star build out of Plexi and an Adafruit RGB LED strip. Controlled by an Arduino controller. It will be used as christmas decoration behind a window of our house. Looks pretty cool at night.
The RGB LED strip is a great device for this. You can control the color and intensity of each single LED. Only 2 Arduino pins are needed to control 60 or more RGB LEDs. The LED strip is like one big serial shift register. A ready-to-use library can be downloaded at GitHub.
- Arduino 328
- 60x RGB LEDs (2m) Adafruit RGB LED strip
- sheet of Plexiglass 50x25cm 3mm thick
- Wires, 4pin connectors male/female
The RGB star was created with Google SketchUp. The first sketch shows the prelimary result:
For better usage of the plastic sheet, the star is cutted into pieces (5 triangles, 1 pentagram)
The front view of the finished RGB star:
The backside view is showing the RGB LED strip. It is cut into pieces of 5 segments with 12 RGB LEDs. For a more homogenious design the segments are splitted into pieces with 4 and 8 RGB LEDs. The RGB LED strip can be cut down into pieces as small as 2 RGB LEDs
At the moment only a slightly modfied Adafruit example is running. Later on I will add an IR Receiver to switch between different modes of operation or change duration time and color with an IR remote.