#include <Adafruit_NeoPixel.h>
#define PIN        6
#define NUMPIXELS 16
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
bool run = false;
//-----------------------------------------------------------
void setup() {

  pixels.begin();
}
//-----------------------------------------------------------
void loop() {
  if (run == false)
  {
    run = true;
    for (int i = 0; i < NUMPIXELS; i++) {
      pixels.setPixelColor(i, 0, 0, 255);
    }
    pixels.setBrightness(254);
    pixels.show();
    delay(500);
    pixels.setBrightness(0);
    pixels.show();
    delay(500);
    for (int i = 0; i < NUMPIXELS; i++) {
      pixels.setPixelColor(i, 0, 0, 255);
    }
    pixels.setBrightness(255);
    pixels.show();
  }
}