happybirthdayemitter.pde

happybirthdayemitter.pde

/*
  Melody
 
 Plays a melody 
 
 circuit:
 * 8-ohm speaker on digital pin 8
 
 created 21 Jan 2010
 by Tom Igoe 
 
 http://arduino.cc/en/Tutorial/Tone
 
 */
 #include "pitches.h"


int inPin = 8;
int ledPin =  13;    // LED connected to digital pin 13

// notes in the melody:
int melody[] = {
//  NOTE_C4, NOTE_G3,NOTE_G3, NOTE_A3, NOTE_G3,0, NOTE_B3, NOTE_C4};
  NOTE_G6, NOTE_G6, NOTE_A6, NOTE_G6, NOTE_C7, NOTE_B6, 0,
  NOTE_G6, NOTE_G6, NOTE_A6, NOTE_G6, NOTE_D6, NOTE_C6, 0,
  NOTE_G6, NOTE_G6, NOTE_G7, NOTE_E6, NOTE_C6, NOTE_C6, NOTE_B6, NOTE_A6, 0,
  NOTE_F6, NOTE_F6, NOTE_E6, NOTE_C6, NOTE_D6, NOTE_C6};

// note durations: 4 = quarter note, 8 = eighth note, etc.:
//int noteDurations[] = {  4, 8, 8, 4,4,4,4,4 };
int noteDurations[] = {  
2, 4, 2, 2, 2, 2, 2,
2, 4, 2, 2, 2, 2, 2,
2, 4, 2, 2, 2, 2, 2, 2, 2,
2, 4, 2, 2, 2, 2};

void setup() {
  
  pinMode(ledPin, OUTPUT);
  digitalWrite(inPin, HIGH);   
  digitalWrite(ledPin, HIGH);   // set the LED on
  // iterate over the notes of the melody:
  for (int thisNote = 0; thisNote < 29; thisNote++) {

    // to calculate the note duration, take one second 
    // divided by the note type.
    //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
    int noteDuration = 1000/noteDurations[thisNote];
    tone(inPin, melody[thisNote],noteDuration);

    // to distinguish the notes, set a minimum time between them.
    // the note's duration + 30% seems to work well:
    //int pauseBetweenNotes = noteDuration * 1.30;
    int pauseBetweenNotes = noteDuration * 1.10;
    delay(pauseBetweenNotes);
  }
  digitalWrite(ledPin, LOW);    // set the LED off
}

void loop() {
  // no need to repeat the melody.
}