/* Keyboard cat Connect a piezo buzzer or speaker to pin 11 or select a new pin. More songs available at https://github.com/robsoncouto/arduino-songs Robson Couto, 2019 */ #define NOTE_B0 31 #define NOTE_C1 33 #define NOTE_CS1 35 #define NOTE_D1 37 #define NOTE_DS1 39 #define NOTE_E1 41 #define NOTE_F1 44 #define NOTE_FS1 46 #define NOTE_G1 49 #define NOTE_GS1 52 #define NOTE_A1 55 #define NOTE_AS1 58 #define NOTE_B1 62 #define NOTE_C2 65 #define NOTE_CS2 69 #define NOTE_D2 73 #define NOTE_DS2 78 #define NOTE_E2 82 #define NOTE_F2 87 #define NOTE_FS2 93 #define NOTE_G2 98 #define NOTE_GS2 104 #define NOTE_A2 110 #define NOTE_AS2 117 #define NOTE_B2 123 #define NOTE_C3 131 #define NOTE_CS3 139 #define NOTE_D3 147 #define NOTE_DS3 156 #define NOTE_E3 165 #define NOTE_F3 175 #define NOTE_FS3 185 #define NOTE_G3 196 #define NOTE_GS3 208 #define NOTE_A3 220 #define NOTE_AS3 233 #define NOTE_B3 247 #define NOTE_C4 262 #define NOTE_CS4 277 #define NOTE_D4 294 #define NOTE_DS4 311 #define NOTE_E4 330 #define NOTE_F4 349 #define NOTE_FS4 370 #define NOTE_G4 392 #define NOTE_GS4 415 #define NOTE_A4 440 #define NOTE_AS4 466 #define NOTE_B4 494 #define NOTE_C5 523 #define NOTE_CS5 554 #define NOTE_D5 587 #define NOTE_DS5 622 #define NOTE_E5 659 #define NOTE_F5 698 #define NOTE_FS5 740 #define NOTE_G5 784 #define NOTE_GS5 831 #define NOTE_A5 880 #define NOTE_AS5 932 #define NOTE_B5 988 #define NOTE_C6 1047 #define NOTE_CS6 1109 #define NOTE_D6 1175 #define NOTE_DS6 1245 #define NOTE_E6 1319 #define NOTE_F6 1397 #define NOTE_FS6 1480 #define NOTE_G6 1568 #define NOTE_GS6 1661 #define NOTE_A6 1760 #define NOTE_AS6 1865 #define NOTE_B6 1976 #define NOTE_C7 2093 #define NOTE_CS7 2217 #define NOTE_D7 2349 #define NOTE_DS7 2489 #define NOTE_E7 2637 #define NOTE_F7 2794 #define NOTE_FS7 2960 #define NOTE_G7 3136 #define NOTE_GS7 3322 #define NOTE_A7 3520 #define NOTE_AS7 3729 #define NOTE_B7 3951 #define NOTE_C8 4186 #define NOTE_CS8 4435 #define NOTE_D8 4699 #define NOTE_DS8 4978 #define REST 0 const int LED_red = 4; //red const int LED_green = 5; //green const int LED_blue = 6; //blue const int LED_yellow = 7; //yellow int currentled = LED_red; // change this to make the song slower or faster int tempo = 100; // change this to whichever pin you want to use int buzzer = 3; // notes of the moledy followed by the duration. // a 4 means a quarter note, 8 an eighteenth , 16 sixteenth, so on // !!negative numbers are used to represent dotted notes, // so -4 means a dotted quarter note, that is, a quarter plus an eighteenth!! int melody[] = { // Keyboard cat // Score available at https://musescore.com/user/142788/scores/147371 REST,1, REST,1, NOTE_C4,4, NOTE_E4,4, NOTE_G4,4, NOTE_E4,4, NOTE_C4,4, NOTE_E4,8, NOTE_G4,-4, NOTE_E4,4, NOTE_A3,4, NOTE_C4,4, NOTE_E4,4, NOTE_C4,4, NOTE_A3,4, NOTE_C4,8, NOTE_E4,-4, NOTE_C4,4, NOTE_G3,4, NOTE_B3,4, NOTE_D4,4, NOTE_B3,4, NOTE_G3,4, NOTE_B3,8, NOTE_D4,-4, NOTE_B3,4, NOTE_G3,4, NOTE_G3,8, NOTE_G3,-4, NOTE_G3,8, NOTE_G3,4, NOTE_G3,4, NOTE_G3,4, NOTE_G3,8, NOTE_G3,4, NOTE_C4,4, NOTE_E4,4, NOTE_G4,4, NOTE_E4,4, NOTE_C4,4, NOTE_E4,8, NOTE_G4,-4, NOTE_E4,4, NOTE_A3,4, NOTE_C4,4, NOTE_E4,4, NOTE_C4,4, NOTE_A3,4, NOTE_C4,8, NOTE_E4,-4, NOTE_C4,4, NOTE_G3,4, NOTE_B3,4, NOTE_D4,4, NOTE_B3,4, NOTE_G3,4, NOTE_B3,8, NOTE_D4,-4, NOTE_B3,4, NOTE_G3,-1, }; // sizeof gives the number of bytes, each int value is composed of two bytes (16 bits) // there are two values per note (pitch and duration), so for each note there are four bytes int notes = sizeof(melody) / sizeof(melody[0]) / 2; // this calculates the duration of a whole note in ms int divider = 0, noteDuration = 0; void setup() { pinMode(LED_red, OUTPUT); pinMode(LED_blue, OUTPUT); pinMode(LED_green, OUTPUT); pinMode(LED_yellow, OUTPUT); // iterate over the notes of the melody. // Remember, the array is twice the number of notes (notes + durations) for (int thisNote = 0; thisNote < notes * 2; thisNote = thisNote + 2) { tempo = getMaxTemp(analogRead(A0), 0, 1023, 75, 400); int wholenote = (60000 * 4) / tempo; // calculates the duration of each note divider = melody[thisNote + 1]; if (divider > 0) { // regular note, just proceed noteDuration = (wholenote) / divider; } else if (divider < 0) { // dotted notes are represented with negative durations!! noteDuration = (wholenote) / abs(divider); noteDuration *= 1.5; //increases the duration in half for dotted notes } // we only play the note for 90% of the duration, leaving 10% as a pause tone(buzzer, melody[thisNote], noteDuration * 0.9); digitalWrite(currentled, HIGH); // Wait for the specief duration before playing the next note. delay(noteDuration); // stop the waveform generation before the next note. noTone(buzzer); digitalWrite(currentled, LOW); if(currentled == 7){ currentled=4; }else{ currentled++; } } } void loop() { } float getMaxTemp(float x, float in_min, float in_max, float out_min, float out_max) { return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min; }