#include <Adafruit_NeoPixel.h>

#define LED_PIN    6
#define LED_COUNT 4
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);


uint32_t off = strip.Color(0, 0, 0);
int sw_pin = 2;
int sw_status = 0;
int delayval = 200;
int longdelay = 1500;

void setup() {

  strip.begin();           // INITIALIZE NeoPixel strip object (REQUIRED)
  strip.show();            // Turn OFF all pixels ASAP
  strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)

  pinMode(sw_pin, INPUT_PULLUP);
  Serial.begin(9600);
  
}


void loop() {

   sw_status = digitalRead(sw_pin);
  
   if (sw_status == 0){
    
      strip.setPixelColor(1, 255, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(1, 0, 0, 0); //no light
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(1, 255, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(1, 0, 0, 0); //no light
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(1, 255, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      
      colorWipe(strip.Color(0,   0,   255), 50); // Blue
      strip.fill(off, 0, 4);
      strip.show();  //display the color 
      strip.setPixelColor(0, 0, 0, 0); //no light
      strip.show();  //display the color 
      delay(delayval);
      colorWipe(strip.Color(0,   0,   255), 50); // Blue
      strip.fill(off, 0, 4);
      strip.show();  //display the color 
      strip.setPixelColor(0, 0, 0, 0); //no light
      strip.show();  //display the color 
      delay(delayval);
      colorWipe(strip.Color(0,   0,   255), 50); // Blue
      strip.fill(off, 0, 4);
      strip.show();  //display the color 

      strip.setPixelColor(0, 255, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(0, 0, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(0, 255, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(0, 0, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(0, 255, 0, 0); //red
      strip.show();  //display the color 
      delay(delayval);
      strip.setPixelColor(0, 0, 0, 0); //red
      strip.show();  //display the color 
      delay(longdelay);
      
    }
}

void colorWipe(uint32_t color, int wait) {
  for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
    strip.show();                          //  Update strip to match
    delay(100);                           //  Pause for a moment
  }
}