/* Project: default */
  #include <FastLED.h> 
  #define DATA_PIN 22
  #define LED_TYPE NEOPIXEL 
  #define NUM_LEDS 16
  CRGBArray<NUM_LEDS> leds;
  
  
  unsigned long tiempoNeopix_;
  int contNeopix_;
  
  void setup()
  {
    pinMode(2, INPUT);
    FastLED.addLeds<LED_TYPE, DATA_PIN>(leds, NUM_LEDS);
  FastLED.clear(); 
  FastLED.show();
  
    contNeopix_ = 0;
  }
  
  void loop()
  {
    if(digitalRead(2)){
    if((millis()-tiempoNeopix_)>=((200))){
    tiempoNeopix_=millis();
    if (contNeopix_>= 0 && contNeopix_<= 16) {
    if(contNeopix_-1< 0){
    } else{
    leds[contNeopix_-1] = 0x000000;} 
    FastLED.show();
    leds[contNeopix_] = 0xff0000;
    FastLED.show();
    contNeopix_ = (contNeopix_+1);}}
    if (contNeopix_ >= (1 + 16)) {
    leds[contNeopix_-1] = 0x000000;
    contNeopix_ = 0;}
    }else { contNeopix_ = 0;
    }
    
  }