PCB Mounted Passive Buzzer Module

PCB Mounted Passive Buzzer Module

A passive buzzer module is a digital transducer with a built-in DC power supply. It is widely used in computers, printers, copiers, alarms, electronic toys, car electronics, phones, timers and other electronic projects that need alert sounds.

This module can be mounted on a PCB and can produce different sound tones depending on the input frequency. It can generate tones from 1.5 to 2.5 kHz by switching on and off at different frequencies using delays or PWM.

This module is ideal for adding sound to your project and is compatible with a pin pitch of 2.54mm. It works with microcontrollers such as Arduino. This module allows you to create a buzzer sound that can be changed over a range of frequencies for maximum effect.
To activate the buzzer, the I/O pin needs to receive a square wave. This can be generated by most microcontrollers.

The following Arduino Sample sketch will generate two different tones by turning on and off the buzzer at different frequencies using a delay.

int buzzer = 8; // set the buzzer control digital IO pin 
void setup() { 
pinMode(buzzer, OUTPUT); // set pin 8 as output
 }
void loop() { 
for (int i = 0; i < 80; i++) { 
     digitalWrite(buzzer, HIGH); // make a sound
     delay(1); // send high signal to buzzer
     digitalWrite(buzzer, LOW); // delay 1ms
     delay(1); // send low signal to buzzer 
                             }
 delay(50);
 for (int j = 0; j < 100; j++) { 
     digitalWrite(buzzer, HIGH);  //make another sound 
     delay(2);
     digitalWrite(buzzer, LOW); // delay 2ms 
     delay(2);
                               }
 delay(100); 
}

Connection Diagram:

Connections:

• Arduino: Buzzer
• GND: (minus sign)
• Center Pin: No connection
• Any digital pin: S

Features

1. Operating Voltage : 1.5 ~ 15V DC
2. Working Current: Less than 25mA
3. Material: Plastic
4. Tone Generation Range : 1.5 ~ 2.5kHz
5. Dimensions (LxWxH):  26 x 15 x 11 mm
6. Colour: Black
7. Weight: 3g

Specifications:

Package Includes

• 1 x PCB Mounted Passive Buzzer Module