/*
* 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
* D 588 Hz 1700 850
* E 658 Hz 1519 760
* F 698 Hz 1432 716
* G 784 Hz 1275 638
* A 880 Hz 1136 568
* B 986 Hz 1014 507
* x 655
* y 715
*/
int speakerPin = 13; //pin to use to drive speaker
int ledPins[] = {2, 3, 4, 5, 6, 7, 8, 9};
// next line lists notes we want to be able to play
char names[] = {'c','d','e','f','g','a','b','C','D','E','F','G','A','B','x','y'};
int rangeOfNotes = 16; //number of notes available in the above array
//next line lists values corresponding to note names in names[] array
int tones[] ={1915, 1700, 1519, 1432, 1275, 1136, 1014, 956, 850, 760, 716, 638, 568, 507, 655, 715};int length = 17; // the number of notes and rests I want to play in my song
char notes[] = "GAGFEFGDEFEFGDGEC"; // notes to play. A space represents a rest
/*next line lists how long to play each note or rest.
it has to be a double rather than an int to allow for decimals*/
double beats[] = {1.5, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 1, 4 };
int tempo = 300; //how long one beat is in milliseconds
void setup(){
pinMode(speakerPin, OUTPUT);
//Setup pin modes
pinMode(ledPins, OUTPUT);
}
void loop(){
for (int i = 0; i < length; i++){//for each note in the character array (string)
if (notes[i] == ' '){//if the character is a space, do the following line.
delay(beats[i] * tempo); //rest (there is a pause in the music)
} else { //otherwise (if the character is not a space), do the following line.
playNote(notes[i], beats[i] * tempo);/*play the note notes[i] for
the ammount of time beats[i] * tempo, by using the playNote function defined below*/
}
//delay(tempo/2);//if you want to include a pause between notes, but throws rhythm off.
}
}
void playNote(char note, int duration){//plays the note "note" for the time "duration"
//play the tone corresponding to the note name
for (int i = 0; i < rangeOfNotes; i++){
if (names[i] == note){
playTone(tones[i], duration);
}
}
}
void playTone(int tone, int duration){
for (long i = 0; i < duration *1000L; i += tone * 2){
digitalWrite(speakerPin, LOW);
delayMicroseconds(tone);
digitalWrite(speakerPin, HIGH);
delayMicroseconds(tone);
}
}
````Preformatted text`
The song it plays or beeps is London Bridge, it works great and i got the frequencies down, but they also want working LEDS. Right now the LEDS are connected to 2-9. This is how everything is connected. Piezo box is connected to 13. (pin2-pin9) and (pin13)
So what I am asking is, how could I make it play piezo and how to code in the LED commands for them to music plays.
