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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.
}
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