RGB is LED Unit include 3 individual LEDs. It is also one of the Unit from M5GO Kit. Each one can display anycolor based on RGB value. One feature of this Unit is extension, which means you can have mutiple of them wired together.
This is a very useful piece on STEM class, students can program it to realize some of cool applications, for example a traffic light.
The code below is incomplete. To get complete code, please click here.
/* Install the AdaFruit NeoPixel library first */ #include <Adafruit_NeoPixel.h> #define RGB_PIN 26 #define NUMPIXELS 3 // new a object Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB+NEO_KHZ800); int delayval = 150;// delay for half a second // initialization pixels.begin(); // This initializes the NeoPixel library. // display rgb pixels.setPixelColor(0, pixels.Color(100,0,0));//parameter = (rgb index, color) pixels.setPixelColor(1, pixels.Color(0,100,0)); pixels.setPixelColor(2, pixels.Color(0,0,100)); pixels.show(); // This sends the updated pixel color to the hardware.