#include <Stepper.h>

const int stepsPerRevolution = 100;
const int buzzer = 2;
int count = 0;
int trip = 0;


Stepper myStepper(stepsPerRevolution, 6, 7, 8, 9);

void setup() {
  // initialize digital pin 13 as an output.
  pinMode(13, OUTPUT);
  pinMode(buzzer, OUTPUT);
  myStepper.setSpeed(90);
  Serial.begin(9600);

}

// the loop function runs over and over again forever
void loop() {

    if (trip == 1) {
      myStepper.step(100);
      digitalWrite(13, HIGH);
      tone(buzzer, 2000);
      delay(250);
      digitalWrite(13, LOW);
      noTone(buzzer);
      delay(250);
      digitalWrite(13, HIGH);
      tone(buzzer, 2000);
      delay(250);
      digitalWrite(13, LOW);
      noTone(buzzer);
      delay(30000);
      loop();
    }


    if (count < 10) {
    count += 1;
    digitalWrite(13, HIGH);
    tone(buzzer, 2500);
    delay(100);
    digitalWrite(13, LOW);
    noTone(buzzer);
    delay(900);
    loop();
  }
  if (count < 15) {
    count += 1;
    digitalWrite(13, HIGH);
    tone(buzzer, 2500);
    delay(50);
    digitalWrite(13, LOW);
    noTone(buzzer);
    delay(50);
    digitalWrite(13, HIGH);
    tone(buzzer, 2500);
    delay(50);
    digitalWrite(13, LOW);
    noTone(buzzer);
    delay(900);
    loop();
  }

  noTone(buzzer);
  delay(50);
  int sensorValue = analogRead(A0);
  if (sensorValue >500) {
    digitalWrite(13, HIGH);
    tone(buzzer, 2500);
    delay(35);
    digitalWrite(13, LOW);
    noTone(buzzer);
    delay(35);
    digitalWrite(13, HIGH);
    tone(buzzer, 2500);
    delay(35);
    digitalWrite(13, LOW);
    noTone(buzzer);
    delay(35);
    digitalWrite(13, HIGH);
    tone(buzzer, 2500);
    delay(35);
    digitalWrite(13, LOW);
    noTone(buzzer);
    delay(35);
    digitalWrite(13, HIGH);
    tone(buzzer, 2500);
    delay(3000);
    noTone(buzzer);
    digitalWrite(13, LOW);
    trip += 1;
    delay(300000);

  }  else {
      digitalWrite(13, LOW);
    }
}