아두이노 교육3일차 피에조 부저

int piezoPin = 12;

//도레미파솔라시
unsigned int frqArray[7] = {262, 294, 330, 349, 392, 440, 494};

//똑같아요 동요 박자
int signatures[20] = {4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2};

//똑같아요 동요 음계
int scale[20] = {0, 2, 4, 0, 2, 4, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 0};

void setup()  {
  pinMode(piezoPin, OUTPUT);
}

void loop()  {
  for(int i = 0 ; i < 20 ; i++)  {
    unsigned long duration = 1000 / signatures[i];
    tone(piezoPin, frqArray[scale[i]], duration);
    delay(duration * 1.5);
    noTone(piezoPin);
  }
}