// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// released under the GPLv3 license to match the rest of the AdaFruit NeoPixel library
 
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif
 
// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1
#define PIN            A4
 
// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS      16
 
// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
// example for more information on possible values.
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
 
int delayval = 200; // delay for half a second
 
void setup() {
  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
#if defined (__AVR_ATtiny85__)
  if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
#endif
  // End of trinket special code
 
pinMode(13, OUTPUT);
digitalWrite(13, LOW);
 
  pixels.begin(); // This initializes the NeoPixel library.
}
 
void loop() {
 
  // For a set of NeoPixels the first NeoPixel is 0, second is 1, all the way up to the count of pixels minus one.
 
 
  for (int i = 0; i < NUMPIXELS; i++) {
 
    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
    pixels.setPixelColor(i, pixels.Color(0, 2, 0)); // Moderately bright green color.
 
  }
  pixels.show(); // This sends the updated pixel color to the hardware.
 
  delay(delayval); // Delay for a period of time (in milliseconds).
  for (int i = 0; i < NUMPIXELS; i++) {
 
    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
    pixels.setPixelColor(i, pixels.Color(0, 0, 2)); // Moderately bright green color.
 
  }
  pixels.show(); // This sends the updated pixel color to the hardware.
 
  delay(delayval); // Delay for a period of time (in milliseconds).
  for (int i = 0; i < NUMPIXELS; i++) {
 
    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
    pixels.setPixelColor(i, pixels.Color(2, 0, 0)); // Moderately bright green color.
 
  }
  pixels.show(); // This sends the updated pixel color to the hardware.
 
  delay(delayval); // Delay for a period of time (in milliseconds).
 
 
}