#include <Servo.h>

int btn = 8;
int buzzer = 10;
Servo myservo;
int pos = 0;
bool isOn = false;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;

void setup() {
  pinMode(0, OUTPUT);
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(btn, INPUT_PULLUP);
  pinMode(buzzer, OUTPUT);
}

void loop() {

  int reading = digitalRead(btn);

  if (reading == LOW && (millis() - lastDebounceTime) > debounceDelay) {
    isOn = !isOn;
    lastDebounceTime = millis();
    while (digitalRead(btn) == LOW);
  }

  if (isOn) {
    myservo.attach(9);

    digitalWrite(0, HIGH);
    tone(buzzer, 261);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    delay(500);

    if (!isOn) return;

    digitalWrite(1, HIGH);
    tone(buzzer, 294);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(1, LOW);
    delay(500);

    if (!isOn) return;

    digitalWrite(2, HIGH);
    tone(buzzer, 329);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(2, LOW);
    delay(500);

    if (!isOn) return;

    digitalWrite(3, HIGH);
    tone(buzzer, 349);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(3, LOW);
    delay(500);

    if (!isOn) return;

    digitalWrite(4, HIGH);
    tone(buzzer, 392);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(4, LOW);
    delay(500);

    if (!isOn) return;

    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
    tone(buzzer, 493);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
    delay(500);
    if (!isOn) return;

    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    tone(buzzer, 523);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    delay(500);
    if (!isOn) return;

    digitalWrite(4, HIGH);
    tone(buzzer, 264);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(4, LOW);
    delay(500);
    if (!isOn) return;

    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    tone(buzzer, 292);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    delay(500);
    if (!isOn) return;

    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    tone(buzzer, 330);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    delay(500);
    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    tone(buzzer, 352);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    delay(500);
    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    tone(buzzer, 396);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    delay(500);
    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    tone(buzzer, 440);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    delay(500);
    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    tone(buzzer, 495);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    delay(500);
    digitalWrite(0, HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    tone(buzzer, 528);
    for (pos = 0; pos <= 180; pos += 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      if (digitalRead(btn) == LOW) {
        isOn = false;
        break;
      }
      myservo.write(pos);
      delay(5);
    }

    noTone(buzzer);
    digitalWrite(0, LOW);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    delay(500);
    myservo.detach();
  } else {

    for (int i = 0; i <= 5; i++) {
      digitalWrite(i, LOW);
    }
    myservo.detach();
    noTone(buzzer);
  }
}