#include <Adafruit_NeoPixel.h>

// Which pin on the Arduino is connected to the NeoPixels?
#define PIN        3 // On Trinket or Gemma, suggest changing this to 1

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 2 // Popular NeoPixel ring size

Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

unsigned long previousMillisA = 0;        // will store last time LED was updated
const long intervalA = 1000;           // interval at which to blink (milliseconds)
unsigned long previousMillisB = 0;        // will store last time LED was updated
const long intervalB = 444;           // interval at which to blink (milliseconds)
bool stateLEDA;
bool stateLEDB;

void setup() {
  // put your setup code here, to run once:
  pixels.begin();
}

void loop() {

  // check to see if it's time to blink the LED; that is, if the difference
  // between the current time and last time you blinked the LED is bigger than
  // the interval at which you want to blink the LED.
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillisA >= intervalA) {
    // save the last time you blinked the LED
    previousMillisA = currentMillis;
    stateLEDA = !stateLEDA;
  }
  
  if (currentMillis - previousMillisB >= intervalB) {
    // save the last time you blinked the LED
    previousMillisB = currentMillis;
    stateLEDB = !stateLEDB;
  }

  if (stateLEDA) {
    pixels.setPixelColor(0, pixels.Color(0, 255, 0));
  }
  else {  
    pixels.setPixelColor(0, pixels.Color(0, 0, 0));
  }

  if (stateLEDB) {
    pixels.setPixelColor(1, pixels.Color(0, 255, 0));
  }
  else {  
    pixels.setPixelColor(1, pixels.Color(0, 0, 0));
  }

  pixels.show();
}