// 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> // Required for 16 MHz Adafruit Trinket
#endif

// Which pin on the Arduino is connected to the NeoPixels?
#define PIN        6 // On Trinket or Gemma, suggest changing this to 1

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 16 // Popular NeoPixel ring size

// When setting up 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(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

#define DELAYVAL 2000 // Time (in milliseconds) to pause between pixels

void setup() {
  pixels.setBrightness(255);
  pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
}

void loop() {
  pixels.clear(); // Set all pixel colors to 'off'
  
  // The first NeoPixel in a strand is #0, second is 1, all the way up
  // to the count of pixels minus one.
  for(int i=0; i<NUMPIXELS; i++) { // For each pixel...
  
    pixels.setBrightness(255);

    // pixels.Color() takes RGB values, from 0,0,0 up to 255,255,255
    // Here we're using a moderately bright green color:
    //pixels.setPixelColor(i, pixels.Color(255, 0, 0));
    pixels.fill(pixels.Color(255,0,0), 0, 16);

    pixels.show();   // Send the updated pixel colors to the hardware.

    delay(DELAYVAL); // Pause before next pass through loop

    pixels.setBrightness(200);

    //pixels.fill(pixels.Color(0,0,0), 0, 16);

    pixels.show();   // Send the updated pixel colors to the hardware.

    delay(DELAYVAL); // Pause before next pass through loop

//    for(int i=0; i<NUMPIXELS; i++) { // For each pixel...
      // pixels.Color() takes RGB values, from 0,0,0 up to 255,255,255
      // Here we're using a moderately bright green color:
      //pixels.setPixelColor(i, pixels.Color(255, 0, 0));

      //pixels.show();   // Send the updated pixel colors to the hardware.

      //delay(20); // Pause before next pass through loop
    //}

  }
}