#include <Adafruit_NeoPixel.h>

#define PIN 6
#define NUMPIXELS 16

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pixels.begin();
}

void loop() {
f1();
delay(250);
white();
delay(250);
f1();
delay(250);
white();
delay(250);
f2();
delay(250);
white();
delay(250);
f2();
delay(250);
white();
delay(250);
f2();
delay(250);
white();
delay(250);
f2();
delay(250);
white();
delay(250);
f3();
delay(250);
white();
delay(250);
f3();
delay(250);
white();
delay(250);
}

void f1 (){
  for(int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(255, 0, 0));
  }
  pixels.show();
}

void f2 (){
  for(int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(0, 255, 0));
  }
  pixels.show();
}

void f3 (){
  for(int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(0, 0, 255));
  }
  pixels.show();
}
void white (){
    for(int i = 0; i < NUMPIXELS; i++) {
    pixels.setPixelColor(i, pixels.Color(0, 0, 0));
  }
  pixels.show();
}