#include <Adafruit_NeoPixel.h>
int dinpin = 13;
int number = 16;
Adafruit_NeoPixel ring = Adafruit_NeoPixel(number, dinpin);
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<number; i++){
    ring.setPixelColor(i, ring.Color(255, 247, 0));
    ring.show();
    delay(500);

    if(i<8){
    ring.setPixelColor(i, ring.Color(255, 0, 0));
    ring.show();
    delay(500);     
    }
    else{
    ring.setPixelColor(i, ring.Color(0, 255, 0));
    ring.show();
    delay(500);
    }
  }

}