Control the frequency of Buzzer Module using Push Buttons

Introduction

In this project, we have used buzzer module which will be controlled by the series of Buttons and generate various tones.

HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

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

SPECIFICATIONS

Buzzer Module

Active Buzzer Module produces a single-tone sound when signal is high. To produce different tones use the Passive Buzzer Module. It consists of an active piezoelectric buzzer, it generates a sound of approximately 2.5 kHz when signal is high.

Operating Voltage	3.5V ~ 5.5V
Maximum Current	30mA / 5VDC
Resonance Frequency	2500Hz ± 300Hz
Minimum Sound Output	85Db @ 10cm
Working Temperature	-20°C ~ 70°C [-4°F ~ 158°F]
Storage Temperature	-30°C ~ 105°C [-22°F ~ 221°F]
Dimensions	18.5mm x 15mm [0.728in x 0.591in]

Arduino Uno

CIRCUIT CONNECTION

Attach four buttons on Breadboard.
Connect GND of Arduino Uno with Breadboard for further GND connections.
Connect Pin 5V of Arduino Uno with Breadboard for further 5V power supply connections.
Connect one terminal of Button 1 with Analog Pin A0 of Arduino Uno via 10K Ohm resistor.
Connect one terminal of Button 2 with Analog Pin A0 of Arduino Uno via 10K Ohm resistor.
Connect one terminal of Button 3 with Analog Pin A0 of Arduino Uno via 10K Ohm resistor.
Connect one terminal of Button 4 with Analog Pin A0 of Arduino Uno via 10K Ohm resistor.
Connect other end of all resistors with GND rail of Breadboard.
Connect other terminal of all buttons with 5V rail of Breadboard.
Connect VCC of Buzzer with 5V rail of Breadboard.
Connect GND of Buzzer with GND rail of Breadboard.
Connect Pin Signal of Buzzer with Digital Pin 8 of Arduino Uno.

CODE

https://drive.google.com/open?id=1zWxx9yW6HiaNEgqp_LJXE_Rlx4LJD8TM

int notes1[] = {95,294,530,749};

int notes2[] = {264,294,330,449};

int notes3[] = {180,349,499,549};

int notes4[] = {220,494,430,649};

/* 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()

{

// put your setup code here, to run once:

Serial.begin(9600);

}

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

void loop()

{

// put your main code here, to run repeatedly:

int keyval = analogRead(A0);

Serial.println(keyval);

if(keyval == 1023)

{

tone(8,notes1[0]);

}

else if(keyval >= 990 && keyval <=1010){

tone(8,notes2[1]);

}

else if(keyval >= 505 && keyval <=515){

tone(8,notes3[2]);

}

else if(keyval >= 5 && keyval <=10){

tone(8,notes4[3]);

}

else

{

noTone(8);

}

WORKING

Welcome to the Arduino Based Project which consists of Passive Buzzer. The basic working principle of Buzzer is being described here. After uploading the code, when you press the button, Buzzer module generates sound due to the internal oscillation. The buzzer module which will change the frequency of tone from High to Low volume after every button pressed.