unsigned long elapsedTime = 0; // Milliseconds elapsed
unsigned long startTime = 0;  // Milliseconds since start

int timeSecond= elapsedTime / 1000;
bool running = true;       // Flag indicating if stopwatch is running


void setup() {
  Serial.begin(9600);         // Initialize serial monitor for debugging
  for(int i = 1 ; i>7 ; i++)
    pinMode(i ,OUTPUT);
}

void loop() {
  // Update elapsed time if stopwatch is running
  elapsedTime = millis() - startTime;
  

  // Display elapsed time on serial monitor
  // You can replace this with printing to LCD or other methods
  timeSecond= elapsedTime / 1000;
  Serial.print("Elapsed Time: ");
  Serial.print(timeSecond);
  Serial.println(" seconds");
  if (timeSecond == 0) {
    digitalWrite(2 ,HIGH);
    digitalWrite(3 ,LOW);
    digitalWrite(4 ,LOW);

    digitalWrite(5 ,LOW);
    digitalWrite(6 ,LOW);
    digitalWrite(7 ,HIGH);
  }
  else if(timeSecond == 30){
    digitalWrite(2 ,HIGH);
    digitalWrite(3 ,HIGH);
    digitalWrite(4 ,LOW);

    digitalWrite(5 ,LOW);
    digitalWrite(6 ,LOW);
    digitalWrite(7 ,HIGH);
  }
  else if(timeSecond == 60){
    digitalWrite(2 ,LOW);
    digitalWrite(3 ,LOW);
    digitalWrite(4 ,HIGH);

    digitalWrite(5 ,HIGH);
    digitalWrite(6 ,LOW);
    digitalWrite(7 ,LOW);
  }
  else if(timeSecond == 90){
    digitalWrite(2 ,LOW);
    digitalWrite(3 ,LOW);
    digitalWrite(4 ,HIGH);

    digitalWrite(5 ,HIGH);
    digitalWrite(6 ,HIGH);
    digitalWrite(7 ,LOW);
  }
  // Check if reset button is pressed
  else if (timeSecond == 120) {
    startTime = millis();
    elapsedTime =  0;
  }
  delay(10); // Delay to avoid overloading serial monitor
}