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// This #include statement was automatically added by the Particle IDE.
#include <neopixel.h>

// IMPORTANT: Set pixel COUNT, PIN and TYPE
#define PIXEL_PIN D2
#define PIXEL_COUNT 16
#define PIXEL_TYPE WS2812

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);

void setup() {

  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  
  uint16_t i;
  uint32_t c = strip.Color(0, 0, 255); // Blue
  uint32_t d = strip.Color(0, 0, 0); // Off
    
    for( int i = 0; i < strip.numPixels(); i++ ){
       strip.setPixelColor(i,c); // set a color 
       strip.setBrightness(20);
       strip.show();
       delay( 500 );
    }
	
	delay( 100 );

    for( int i = strip.numPixels(); i > 0; i-- ){
       strip.setPixelColor(i, d); // set a color 
       strip.setBrightness(20);
       strip.show();
       delay( 500 );
    }

}
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