#include <FastLED.h>

#define NUM_LEDS 16
#define LED_PIN 6
#define BRIGHTNESS 255

CRGB leds[NUM_LEDS];


void setup() {
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(255);  // 0-255

}

void loop() { // breathing effect

for(int i=0;i<NUM_LEDS;i++){
  leds[i]=CRGB::LightGreen;
}
for(int i=0; i<BRIGHTNESS;i++){
  FastLED.setBrightness(random(65,188));
  FastLED.show();
  delay(277);
}
delay(200);
for(int i=BRIGHTNESS;i>0;i--){
  FastLED.setBrightness(i);
  FastLED.show();
  delay(10);
}


  FastLED.show();

 // while (1);

}