1. Hello, World - Spark Core - higepon blog

Now I know how to turn on/off the RGB LED. Let’s change color of the LED. Found a document at htt...概要を表示 Now I know how to turn on/off the RGB LED. Let’s change color of the LED. Found a document at http://docs.spark.io/firmware/#libraries-rgb. Okay, I need to call RGB.control(true) in setup() method and can change color by calling RGB.color(r, g, b) method. Changing color periodically would be easy using rand() method. int led = D0; // The RGB LED // This routine runs only once upon reset void setup