78 lines
1.4 KiB
Arduino
78 lines
1.4 KiB
Arduino
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int length = 26;
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char notes[] = "eeeeeeegcde fffffeeeeddedg";
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int beats[] = { 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2};
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int tempo = 300;
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int LED1 = 12;
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int LED2 = 11;
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int LED3 = 10;
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int SPEAKER = 8;
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int BEATTIME = 100;
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void setup() {
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pinMode(LED1, OUTPUT);
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pinMode(LED2, OUTPUT);
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pinMode(LED3, OUTPUT);
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pinMode(SPEAKER, OUTPUT);
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}
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void loop() {
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for (int i = 0; i < length; i++) {
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if (notes[i] == ' ') {
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delay(beats[i] * tempo); // rest
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} else {
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playNote(notes[i], beats[i] * tempo);
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}
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TurnOnLed(LED1);
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TurnOnLed(LED2);
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TurnOnLed(LED3);
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// pause between notes
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delay(tempo / 2);
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}
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}
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void playNote(char note, int duration) {
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char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
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int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956 };
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// play the tone corresponding to the note name
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for (int i = 0; i < 8; i++) {
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if (names[i] == note) {
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playTone(tones[i], duration);
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}
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}
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}
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void playTone(int tone, int duration) {
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for (long i = 0; i < duration * 1000L; i += tone * 2) {
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digitalWrite(SPEAKER, HIGH);
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delayMicroseconds(tone);
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digitalWrite(SPEAKER, LOW);
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delayMicroseconds(tone);
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}
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}
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void TurnOnLed(int pin){
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digitalWrite(pin, LOW);
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int r = random(0,2);
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if (r == 1) {
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digitalWrite(pin, HIGH);
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}
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}
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void TurnOffLed(int pin){
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if (random(0,1) == 0) {
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digitalWrite(pin, LOW);
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}
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}
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