Arduino Song Experiment
int length = 26; // the number of notes
char notes[] = "cdfdaagcdfdggfcdfdfgedccgf "; // a space represents a rest
int beats[] = { 1, 1, 1, 1, 3, 3, 5, 1, 1, 1, 1, 3, 3, 5, 1, 1, 1, 1, 4, 2, 3, 1, 4, 2, 4, 8 };
int tempo = 120;
FULL CODE BELOW
/* Melody
* (cleft) 2005 D. Cuartielles for K3
*
* This example uses a piezo speaker to play melodies. It sends
* a square wave of the appropriate frequency to the piezo, generating
* the corresponding tone.
*
* The calculation of the tones is made following the mathematical
* operation:
*
* timeHigh = period / 2 = 1 / (2 * toneFrequency)
*
* where the different tones are described as in the table:
*
* note frequency period timeHigh
* c 261 Hz 3830 1915
* d 294 Hz 3400 1700
* e 329 Hz 3038 1519
* f 349 Hz 2864 1432
* g 392 Hz 2550 1275
* a 440 Hz 2272 1136
* b 493 Hz 2028 1014
* C 523 Hz 1912 956
*
* http://www.arduino.cc/en/Tutorial/Melody
*/
int speakerPin = 9;int length = 26; // the number of notes
char notes[] = "cdfdaagcdfdggfcdfdfgedccgf "; // a space represents a rest
int beats[] = { 1, 1, 1, 1, 3, 3, 5, 1, 1, 1, 1, 3, 3, 5, 1, 1, 1, 1, 4, 2, 3, 1, 4, 2, 4, 8 };
int tempo = 120;
/*
* Twinkle Twinkle
* int length = 15; // the number of notes
* char notes[] = "ccggaagffeeddc "; // a space represents a rest
* int beats[] = { 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 4 };
* int tempo = 300;
*/void playTone(int tone, int 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) {
char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956 };
// 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);
}void loop() {
for (int i = 0; i < length; i++) {
if (notes[i] == ' ') {
delay(beats[i] * tempo); // rest
} else {
playNote(notes[i], beats[i] * tempo);
}
// pause between notes
delay(tempo / 2);
}
}
