Push Button Happy Birthday 3 Leds Diagram_

 Components required to make this project_

Arduino Uno,nano

A buzzer or speaker 4ohm

A push button

3 5mm Leds

A 10k ohm resistor

For leds safety you can use 3 220ohm resistor to each led of positive leg

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Copy and paste the code to arduino ide or arduinodroid_

Code are given below _

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//constant will be not change

const int speakerPin = 2;

const int led1 = 5;

const int led2 = 6;

const int led3 = 7;

const int button = 12;

int buttonState = 0;

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(button, INPUT); //sets a pin as a input

pinMode(speakerPin, OUTPUT);////sets a pin as a Output

pinMode(led1, OUTPUT);

pinMode(led2, OUTPUT);

pinMode(led3, OUTPUT);

}

void loop() {

  buttonState = digitalRead(button);

 if (buttonState == HIGH)

  {

 for(int k =0; k< 2; k++ )

{

    digitalWrite(led1, HIGH);

    digitalWrite(led2, HIGH);

    digitalWrite(led3, HIGH);

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);

}

}

}

else

 {

    // turn LED off:

    noTone(speakerPin);

    digitalWrite(led1, LOW);

    digitalWrite(led2, LOW);

    digitalWrite(led3, LOW);

  }

}