#include <Adafruit_NeoPixel.h> //include the neopixel library

#define PIN 6 //define the pin number for the neopixel ring
#define NUMPIXELS 16 //define the number of pixels in the ring

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800); //create an instance of the neopixel object

void setup() {
  pixels.begin(); //initialize the neopixel ring
}

void loop() {
  //set all pixels to red
  for (int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(255, 0, 0)); //set the color of each pixel to red
    pixels.show(); //update the neopixel ring
    delay(1000); //wait for 100 milliseconds
  }

  //set all pixels to green
  for (int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(0, 255, 0)); //set the color of each pixel to green
    pixels.show(); //update the neopixel ring
    delay(100); //wait for 100 milliseconds
  }

  //set all pixels to blue
  for (int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(0, 0, 255)); //set the color of each pixel to blue
    pixels.show(); //update the neopixel ring
    delay(100); //wait for 100 milliseconds
    pixels.clear();
  }
}

//Code sourced from Adafruit NeoPixel library examples: https://github.com/adafruit/Adafruit_NeoPixel/blob/master/examples/strandtest/strandtest.ino