#include <Adafruit_NeoPixel.h>
int PIN = 12;
int N_LED = 16;
Adafruit_NeoPixel ring = Adafruit_NeoPixel(N_LED, PIN);

void setup() {
  // put your setup code here, to run once:
  ring.begin();

}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i = 0; i<N_LED; i++)
  {

    ring.setPixelColor(i, ring.Color(0,0,255));
    ring.show();
    delay(100);

  }

  for(int i = 0; i<N_LED; i++)
  {

    ring.setPixelColor(i, ring.Color(0,255,0));
    ring.show();
    delay(100);

  }

  for(int i = 0; i<N_LED; i++)
  {

    ring.setPixelColor(i, ring.Color(255,0,0));
    ring.show();
    delay(100);

  }
  

}