const int ledPin = D0;      // the number of the LED pin
const int ledPin1 =  D6;    // the number of the LED pin
const int ledPin2 =  D7;    // the number of the LED pin
const int buttonPin = D1;   // the number of the pushbutton pin 
int buttonState = 0;        // variable for reading the pushbutton status
 
void setup()
{
  Serial.begin(9600);       // Initialize serial communication at 9600 baud rate
  pinMode(buttonPin, INPUT);  // Set buttonPin as an input
  pinMode(ledPin, OUTPUT);    // Set ledPin as an output
  pinMode(ledPin1, OUTPUT);   // Set ledPin1 as an output
  pinMode(ledPin2, OUTPUT);   // Set ledPin2 as an output
}

void loop()
{ 
  buttonState = digitalRead(buttonPin);  // Read the state of the pushbutton
  if (buttonState == HIGH) {             // If the button is pressed
    Serial.println("Hello little lights, it's time to shine");  // Print a message to the serial monitor
    for (int i = 0; i <= 4; i++) {        // Repeat the following block 5 times
      Serial.println("LED 1 is ON");      // Print a message indicating LED 1 is ON
      digitalWrite(ledPin, HIGH);         // Turn on the first LED
      delay(1000);                         // Wait for 1 second
      Serial.println("LED 2 is ON");      // Print a message indicating LED 2 is ON
      digitalWrite(ledPin1, HIGH);        // Turn on the second LED
      delay(1000);                         // Wait for 1 second
      Serial.println("LED 3 is ON");      // Print a message indicating LED 3 is ON
      digitalWrite(ledPin2, HIGH);        // Turn on the third LED
      delay(1000);                         // Wait for 1 second
      Serial.println("All LEDs are OFF"); // Print a message indicating all LEDs are OFF
      digitalWrite(ledPin, LOW);          // Turn off the first LED
      digitalWrite(ledPin1, LOW);         // Turn off the second LED
      digitalWrite(ledPin2, LOW);         // Turn off the third LED
      delay(1000);                         // Wait for 1 second
    }
  } else {                                // If the button is not pressed
    digitalWrite(ledPin, LOW);           // Turn off the first LED
    digitalWrite(ledPin1, LOW);          // Turn off the second LED
    digitalWrite(ledPin2, LOW);          // Turn off the third LED
  }
}