I'm testing my new Duemilanove. (I already smashed out one Arduino an d now I tought that maybe I should ask before doing...)
Blink is working fine and now I'd like to test same other examples. I've got speaker 16 Ohm, 0.5W Robomaa. Can I just put black wire to GND-pin and red wire to pin 8 and upload sketch Example -> Digital -> Tone melody. Or do I need speaker of 8 Ohm?
The skettch is:
/*
Melody
Plays a melody
circuit:
- 8-ohm speaker on digital pin 8
created 21 Jan 2010
by Tom Igoe
This example code is in the public domain.
*/
#include "pitches.h"
// notes in the melody:
int melody[] = {
NOTE_C4, NOTE_G3,NOTE_G3, NOTE_A3, NOTE_G3,0, NOTE_B3, NOTE_C4};
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {
4, 8, 8, 4,4,4,4,4 };
void setup() {
// iterate over the notes of the melody:
for (int thisNote = 0; thisNote < 8; 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);
}
}
void loop() {
// no need to repeat the melody.
}
