#define gas A0
#define led 11
#define buzzer 10
#define alert 9


void setup() {
  pinMode(gas, INPUT);
  pinMode(buzzer, OUTPUT); 
  pinMode(led, OUTPUT);
  
}

void loop() {

  int x = 0;
  int val = 0;
  
  x = analogRead(A0);
  val = map(x, 0, 1023, 0, 11);

  switch(val){
    case 0:{
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(30000);
      break;
    }

    case 1:{
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(30000);
      break;
    }

    case 2:{
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(30000);
      break;
    }

    case 3:{
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(150);
      digitalWrite(led, HIGH);
      delay(70);
      digitalWrite(led, LOW);
      delay(30000);
      break;
    }

    case 4:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }

    case 5:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }

    case 6:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }
    case 7:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }
    case 8:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }
    case 9:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }
    case 10:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }
    case 11:{
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(100);
      for(int i = 0; i <= 1000; i++){
        buzz();
        delay(1);
      }
      delay(2000);
      break;
    }
  }
}

void buzz(){
  digitalWrite(buzzer, HIGH);
  delayMicroseconds(100);
  digitalWrite(buzzer, LOW);
  delayMicroseconds(200);
}