Happy Birthday melody using Arduino Nano and Arduino Uno with code

 

Circuit with Arduino Nano

Circuit Diagram with Arduino Uno

Circuit Diagram-Arduino Uno

Requirements

1. Arduino Nano
2. Breadboard
3. Jumper Wire
4. Usb cable

Connect positive wire of buzzer to D4 Digital pin of Arduino and negative wire to Ground pin of Arduino.

Code for Arduino Nano and Arduino Uno are same.

CODE

83

int speakerPin = 4; int length = 28; // the number of notes char notes[] = "GGAGcB GGAGdc GGxecBA yyecdc"; int beats[] = { 2, 2, 8, 8, 8, 16, 1, 2, 2, 8, 8,8, 16, 1, 2,2,8,8,8,8,16, 1,2,2,8,8,8,16 }; int tempo = 150; void playTone(int tone, int duration) { for (long i = 0; i < duration * 1000L; i += tone * 2) { digitalWrite(speakerPin, HIGH); delayMicroseconds(tone); digitalWrite(speakerPin, LOW); delayMicroseconds(tone); } } void playNote(char note, int duration) { char names[] = {'C', 'D', 'E', 'F', 'G', 'A', 'B', 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'x', 'y' }; int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956, 834, 765, 593, 468, 346, 224, 655 , 715 }; int SPEE = 5; // play the tone corresponding to the note name for (int i = 0; i < 17; i++) { if (names[i] == note) { int newduration = duration/SPEE; playTone(tones[i], newduration); } } } void setup() { pinMode(speakerPin, OUTPUT); } void loop() { for (int i = 0; i < length; i++) { if (notes[i] == ' ') { delay(beats[i] * tempo); // rest } else { playNote(notes[i], beats[i] * tempo); } // pause between notes delay(tempo); } }

Watch on YouTube

Thank You!

Happy Learning!