int speakerPin = 7; //buzzer is connected to Pin 11 of the Board.
int length = 149; // the number of notes
char notes[] = "cdeeeeeeeeedef eeedddbdc ccgggggggggaf fffffeddf eedeedeggaff eeeeeddbdc cdeeeedf efgggfedfe feeeddbdc ccggggeggggga fffffedfe egc bab aga ccddeedef "; // a space represents a rest
//char notes[] = "ccddeeeeeeedef eeedddb-dc cggggggggf#ag fffeeedfe eeeeedgggff eeedddb-dc cdeeeedef efgggfedfe eedddb-dc ggggggggggf#ag fffeeedfe egc+ bab aga ccddeedef "; // a space represents a rest
int beats[] = { 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1,
2, 1, 1, 2, 1, 1, 1, 1, 1, 1,
2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1,
2, 1, 1, 2, 1, 1, 1, 1, 1, 1,
2, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1,
2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1,
1, 1, 1, 1, 2, 2, 2, 1, 1,
1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1,
2, 2, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1,
2, 1, 1, 2, 1, 1, 1, 1, 1, 1,
1, 1, 4, 1, 1, 1, 4, 1, 1, 1, 4, 1,
1, 1, 1, 1, 1, 1, 1, 1, 4, 1 };
int tempo = 200; //set tempo
void playTone(int tone, int duration) { //created a square wave for given time duration
for (long i = 0; i < duration * 1000L; i += tone * 2) {
digitalWrite(speakerPin, HIGH);
delayMicroseconds(tone);
digitalWrite(speakerPin, LOW);
delayMicroseconds(tone);
}
}
void playNote(char note, int duration) { //Assigning high time for the notes
char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
int tones[] = { 956, 851, 758, 716, 638, 568, 1014, 478 };
// play the tone corresponding to the note name
for (int i = 0; i < 8; i++) {
if (names[i] == note) {
playTone(tones[i], duration);
}
}
}
void setup() {
pinMode(speakerPin, OUTPUT); // pin 7 as an OutPut Pin
}
void loop() { //Main function
for (int i = 0; i < length; i++) { //For the length of the tune array
if (notes[i] == ' ') { //take space as rest
delay(beats[i] * tempo); // rest
} else {
playNote(notes[i], beats[i] * tempo); //play the corresponding note for the corresponding beat
}
// pause between notes
delay(tempo / 2);
}
}