//elegoo Nano Hardware as "Arduino Nano" on ATMega328P (Old Bootloader)
//claiming the pins
const int led_green = A1;
const int led_red = A2;
const int led_yellow1 = A3;
const int led_yellow2 = A4;
const int led_yellow3 = A5;
int button_value = LOW;
int sound = A7;

//set Input Output
void setup() {
  pinMode(led_red, OUTPUT);
  pinMode(led_yellow1, OUTPUT);
  pinMode(led_yellow2, OUTPUT);
  pinMode(led_yellow3, OUTPUT);
  pinMode(led_green, OUTPUT);
  pinMode(sound, OUTPUT); 
}
//running commands
void loop() {
  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);
     digitalWrite(led_yellow1, HIGH);
      digitalWrite(led_yellow2, HIGH);
      digitalWrite(led_yellow3, HIGH);
      tone(sound, 1000, 300);
      delay(300);
  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);

delay(300);

  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);
     digitalWrite(led_yellow1, HIGH);
      digitalWrite(led_yellow2, HIGH);
      digitalWrite(led_yellow3, HIGH);
      tone(sound, 1000, 300);
      delay(300);
  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);

delay(300);

  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);
     digitalWrite(led_yellow1, HIGH);
      digitalWrite(led_yellow2, HIGH);
      digitalWrite(led_yellow3, HIGH);
      tone(sound, 1000, 300);
      delay(300);
  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);

delay(300);

  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);
     digitalWrite(led_yellow1, HIGH);
      digitalWrite(led_yellow2, HIGH);
      digitalWrite(led_yellow3, HIGH);
      tone(sound, 1000, 300);
      delay(300);
  digitalWrite(led_yellow1, LOW);
  digitalWrite(led_yellow2, LOW);
  digitalWrite(led_yellow3, LOW);

delay(300);


 digitalWrite(led_red, HIGH);
      delay(3500);
        digitalWrite(led_red, LOW);
    digitalWrite(led_yellow1, HIGH);
    tone(sound, 1000, 300);
      delay(750);
         digitalWrite(led_yellow1, LOW);
    digitalWrite(led_yellow2, HIGH);
    tone(sound, 1000, 300);
      delay(750);
         digitalWrite(led_yellow2, LOW);
    digitalWrite(led_yellow3, HIGH);
    tone(sound, 1000, 300);
      delay(750);
         digitalWrite(led_yellow3, LOW);
      digitalWrite(led_green, HIGH);
      tone(sound, 5000, 1000);
      delay(5000);  
        digitalWrite(led_green, LOW);
}