Play Indian National Anthem using Passive Buzzer Module

Hardware Required

Introduction

In this project, we will know the basic functionality of passive buzzer as it can generate various tones such as ‘Happy Birthday’ or any particular tone.

HARDWARE REQUIRED

Name: Play Indian National Anthem using Passive Buzzer Module
Brand: Robokreeda
SKU: 2846
Price: 1237.82 INR
Availability: InStock
Rating: 5 (1 reviews)

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download: https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

Passive Buzzer Module

Arduino Passive Piezoelectric Buzzer Module can produce a range of sound tones depending on the input frequency. It consists of a passive piezoelectric buzzer, it can generate tones between 1.5 to 2.5 kHz by switching it on and off at different frequencies either using delays or PWM.

Operating Voltage: 1.5~15V DC
Tone Generation Range: 1.5~2.5kHz
Dimensions: 18.5mm*15mm

Arduino Uno

CIRCUIT CONNECTION

Connect GND of a buzzer with GND of Arduino Uno.
Connect VCC of a buzzer with Pin 5V of Arduino Uno.
Connect Pin Signal of a buzzer with Digital Pin 9 of Arduino Uno.

CODE

https://drive.google.com/open?id=10oXCCCh9EbD21TT2bo9fDn-sL9jf-2nI
int speakerPin = 9; //buzzer is connected to Pin 9 of the Board.

int length = 27; // the number of notes

char notes[] = “cdeeeeeeeeeeedef eeedddbdc “; // a space represents a rest

int beats[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 2, 4 };//Duration of each note

int tempo = 300; //Change song speed here

void playTone(int tone, int duration) { //creating a square wave for the given 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) { //Assigning high time for the notes

char names[] = { ‘c’, ‘d’, ‘e’, ‘f’, ‘g’, ‘a’, ‘b’, ‘C’ };

int tones[] = { 956, 851, 758, 716, 638, 568, 1014, 478 };

// play the tone corresponding to the note name

for (int i = 0; i < 8; i++) {

if (names[i] == note) {

playTone(tones[i], duration);

}

/* The setup() function is called when a sketch starts. It is used to initialize variables, pin modes, start using libraries, etc. This function will only run once, after each power up or reset of the Arduino board. */

void setup()

{

pinMode(speakerPin, OUTPUT); // Setting pin 9 as an OutPut Pin

}

/* The loop() function executes the program repeatedly until Specified. */

void loop()

{ //Main function

for (int i = 0; i < length; i++) { //For the length of the tune array

if (notes[i] == ‘ ‘) { //take space as rest

delay(beats[i] * tempo); // rest

} else

{

playNote(notes[i], beats[i] * tempo); //play the corresponding note for the corresponding beat

}

// pause between notes

delay(tempo / 2);

}

WORKING

Welcome to the Arduino Based Project which consists of Passive Buzzer. The basic working principle of Passive buzzer is being described here. A passive buzzer requires an AC signal to make a sound. It is like an electromagnetic speaker, where a changing input signal produces the sound, rather than producing a tone automatically.

Here, we have generated a tone from Passive buzzer. It can be done by PWM on the Arduino which can be used to control the pitch and the volume at the same time.

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