We depict the mood of the weather forecast by using RGB LED lighting. We indicate cold weather indications with blue color lighting, fair weather conditions with green lighting, and warm/dangerous weather conditions using red lighting. In this section, we will look into controlling an RGB LED using the Arduino.
The RGB LED strip sold by Adafruit industries (http://www.adafruit.com/products/1004) consumes about 60 mA per segment. It is best recommended to drive the RGB LED strip using a transistor switching circuit. We need to use three transistors for the three colors and it is possible to control each color individually and it is also possible to obtain a combination of colours.