Ik heb geprobeerd een melodietje te programmeren, helaas ben ik niet zo goed in muzieknoten lezen :-)
Voor degene die het herkent en muzikaal is; verbeteringen zijn welkom!
De code:
*
Melody
Plays a melody when you push a button
circuit:
* piezo speaker on digital pin 8
* pus botton on digital pin 2
*/
#include "pitches.h"
// notes in the melody:
int melodystart[] = {
NOTE_D5, NOTE_D5, NOTE_C5, NOTE_F4, NOTE_G4};
int melody[] = {
NOTE_G4, NOTE_G4, NOTE_B4, NOTE_D5, NOTE_C5, NOTE_G4, NOTE_G4, NOTE_G4, NOTE_F4, NOTE_B4, NOTE_G4,
NOTE_G4, NOTE_G4, NOTE_B4, NOTE_D5, NOTE_C5, NOTE_F5, NOTE_D5, NOTE_D5, NOTE_D5, NOTE_B4, NOTE_F5,
NOTE_A5, NOTE_F5, NOTE_D5, NOTE_C5, NOTE_B4, NOTE_G4, NOTE_F4, NOTE_E4,
NOTE_C6, NOTE_A5, NOTE_F5, NOTE_D5, NOTE_C5, NOTE_B4, NOTE_F4, NOTE_G4,
NOTE_D5, NOTE_D5, NOTE_C5, NOTE_F4, NOTE_G4};
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurationsstart[] = {
8, 8, 8, 4, 2 };
int noteDurations[] = {
8, 8, 8, 8, 2, 2, 8, 8, 8, 8, 2,
8, 8, 8, 8, 2, 2, 8, 8, 8, 8, 2,
8, 8, 8, 8, 8, 8, 8, 2,
8, 8, 8, 8, 8, 4, 8, 2,
8, 8, 8, 4, 2 };
const int buttonPin = 2;
int buttonState = 0;
void setup() {
pinMode(buttonPin, INPUT);
// iterate over the notes of the melody:
for (int thisNote = 0; thisNote < 5; 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 noteDurationstart = 1000/noteDurationsstart[thisNote];
tone(8, melodystart[thisNote],noteDurationstart);
// to distinguish the notes, set a minimum time between them.
// the note's duration + 30% seems to work well:
int pauseBetweenNotes = noteDurationstart * 1.30;
delay(pauseBetweenNotes);
// stop the tone playing:
noTone(8);
}
}
void loop(){
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
for (int thisNote = 0; thisNote < 43; 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(8, 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;
delay(pauseBetweenNotes);
// stop the tone playing:
noTone(8);
}
}
else {
}
}
De input button is een schakelaar die met één pootje aan de + zit en het andere pootje aan de input. Om te zorgen dat in de 'open' stand de input 'laag' is, is de input met een pull-down weerstand verbonden met de -.
Wanneer de Arduino opstart hoor je een kort melodietje, wanneer je op de knop drukt speelt het hele melodietje.
En dat klinkt dan als volgt:
