For a digital Christmas, let your Arduino play songs with a piezo buzzer.

I wanted to make a funny Christmas project. Since I'm just starting with Arduino and I only have the parts from the Starter Kit, it had to be something easy. I came across the Super Mario theme with a piezo buzzer project from Romeo Hackster . I decided to recreate it.

First step was adding push buttons, one for every song.

Step 1: Required Some Components

COMPONENTS

Arduino UNO & Genuino UN × 1
Buzzer × 1
SparkFun Pushbutton switch × 3
Resistor 10k ohm
Resistor 330 ohm × 3

Step 2: Video

Watch Full video

https://youtu.be/Dt5NssOUfjg

Step 3: Circuit Diagram

Have you tried to recreate my project? I would love to see your pictures or videos.

Step 4: Arduino Christmas Songs Arduino Code

/*
Arduino Christmas Songs

Based on a project and code by Romeo Hackster
.
*/

#include "pitches.h"

#define melodyPin 9

// Jingle Bells

int melody[] = {
NOTE_E5, NOTE_E5, NOTE_E5,
NOTE_E5, NOTE_E5, NOTE_E5,
NOTE_E5, NOTE_G5, NOTE_C5, NOTE_D5,
NOTE_E5,
NOTE_F5, NOTE_F5, NOTE_F5, NOTE_F5,
NOTE_F5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5,
NOTE_E5, NOTE_D5, NOTE_D5, NOTE_E5,
NOTE_D5, NOTE_G5
};

int tempo[] = {
8, 8, 4,
8, 8, 4,
8, 8, 8, 8,
2,
8, 8, 8, 8,
8, 8, 8, 16, 16,
8, 8, 8, 8,
4, 4
};

// We wish you a merry Christmas

int wish_melody[] = {
NOTE_B3,
NOTE_F4, NOTE_F4, NOTE_G4, NOTE_F4, NOTE_E4,
NOTE_D4, NOTE_D4, NOTE_D4,
NOTE_G4, NOTE_G4, NOTE_A4, NOTE_G4, NOTE_F4,
NOTE_E4, NOTE_E4, NOTE_E4,
NOTE_A4, NOTE_A4, NOTE_B4, NOTE_A4, NOTE_G4,
NOTE_F4, NOTE_D4, NOTE_B3, NOTE_B3,
NOTE_D4, NOTE_G4, NOTE_E4,
NOTE_F4
};

int wish_tempo[] = {
4,
4, 8, 8, 8, 8,
4, 4, 4,
4, 8, 8, 8, 8,
4, 4, 4,
4, 8, 8, 8, 8,
4, 4, 8, 8,
4, 4, 4,
2
};

// Santa Claus is coming to town

int santa_melody[] = {
NOTE_G4,
NOTE_E4, NOTE_F4, NOTE_G4, NOTE_G4, NOTE_G4,
NOTE_A4, NOTE_B4, NOTE_C5, NOTE_C5, NOTE_C5,
NOTE_E4, NOTE_F4, NOTE_G4, NOTE_G4, NOTE_G4,
NOTE_A4, NOTE_G4, NOTE_F4, NOTE_F4,
NOTE_E4, NOTE_G4, NOTE_C4, NOTE_E4,
NOTE_D4, NOTE_F4, NOTE_B3,
NOTE_C4
};

int santa_tempo[] = {
8,
8, 8, 4, 4, 4,
8, 8, 4, 4, 4,
8, 8, 4, 4, 4,
8, 8, 4, 2,
4, 4, 4, 4,
4, 2, 4,
1
};

int switchOne = 0;
int switchTwo = 0;
int switchThree = 0;

void setup(void) {
pinMode(9, OUTPUT); // Buzzer
pinMode(13, OUTPUT); // Led indicator when singing a note
pinMode(2, INPUT);
pinMode(3, INPUT);
pinMode(4, INPUT);
}

void loop() {
switchOne = digitalRead(2);
switchTwo = digitalRead(3);
switchThree = digitalRead(4);
if (switchOne == HIGH) {
sing(1);
} else if (switchTwo == HIGH) {
sing(2);
} else if (switchThree == HIGH) {
sing(3);
}
}

int song = 0;

void sing(int s) {
// iterate over the notes of the melody:
song = s;
if (song == 3) {
Serial.println(" 'We wish you a Merry Christmas'");
int size = sizeof(wish_melody) / sizeof(int);
for (int thisNote = 0; thisNote < size; 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 / wish_tempo[thisNote];

buzz(melodyPin, wish_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);

// stop the tone playing:
buzz(melodyPin, 0, noteDuration);

}
} else if (song == 2) {
Serial.println(" 'Santa Claus is coming to town'");
int size = sizeof(santa_melody) / sizeof(int);
for (int thisNote = 0; thisNote < size; 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 = 900 / santa_tempo[thisNote];

buzz(melodyPin, santa_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);

// stop the tone playing:
buzz(melodyPin, 0, noteDuration);

}
} else {

Serial.println(" 'Jingle Bells'");
int size = sizeof(melody) / sizeof(int);
for (int thisNote = 0; thisNote < size; 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 / tempo[thisNote];

buzz(melodyPin, 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);

// stop the tone playing:
buzz(melodyPin, 0, noteDuration);

}
}
}

void buzz(int targetPin, long frequency, long length) {
digitalWrite(13, HIGH);
long delayValue = 1000000 / frequency / 2; // calculate the delay value between transitions
//// 1 second's worth of microseconds, divided by the frequency, then split in half since
//// there are two phases to each cycle
long numCycles = frequency * length / 1000; // calculate the number of cycles for proper timing
//// multiply frequency, which is really cycles per second, by the number of seconds to
//// get the total number of cycles to produce
for (long i = 0; i < numCycles; i++) { // for the calculated length of time...
digitalWrite(targetPin, HIGH); // write the buzzer pin high to push out the diaphram
delayMicroseconds(delayValue); // wait for the calculated delay value
digitalWrite(targetPin, LOW); // write the buzzer pin low to pull back the diaphram
delayMicroseconds(delayValue); // wait again or the calculated delay value
}
digitalWrite(13, LOW);

}

Step 5: Download Pitches Libraries.

Download The pitches.h library from Google

Step 6: Pitches.h

/*************************************************
* Public Constants
*************************************************/

#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