PCB Mounted Passive Buzzer Module

A passive buzzer module is an integrated digital transducer with DC power supply that is widely used in alarms, computers, copiers, printers, timers, digital toys, cars, and other digital electronics projects for alert sound.

By turning it on and off at various frequencies using delays or PWM, this PCB mounted passive buzzer module can produce a variety of sound tones depending on the input frequency, i.e., it can generate tones between 1.5 and 2.5 kHz.

This module works with microcontrollers like the Arduino and has a pin pitch of 2.54mm, making it perfect for adding noise to your project. With the help of this module, you may reply to programmatic changes with a wonderful, unpleasant beep that can be adjusted over a frequency range for optimal annoyance.
The buzzer needs to be activated by receiving a square wave on the I/O pin. This can be generated by any widely used microcontroller.

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

Specifications and 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