Active buzzer module for Arduino (buzzer module)

The active buzzer module is designed to emit sound signals. It can be used in simple projects where it is necessary to use an audible signal when motion is detected, etc.

The module board is designed based on the YL-44 active buzzer and auxiliary components for the correct operation of the module. The buzzer is active as there is a built-in generator in its housing. When current is applied to the buzzer, its relay coil excites a magnetic field. Under the action of a magnetic field, the relay contacts open. After opening the contacts, the current in the circuit disappears and the magnetic field disappears, after which the springs return to their original position. The process is then repeated as long as current is applied to the circuit. Due to the vibrations of the armature, air vibrations appear, which reproduce the sound of the buzzer.

There are 3 pins on the active buzzer module board:

VCC: supply voltage 3.3 - 5V
I/O: control signal
GND: ground

Power is supplied from an external power source, Arduino platform or other microcontroller device. The module supply voltage range is from 3.3 V to 5 V.

When working with the active buzzer module in the Arduino IDE, you can use the "TONE" library.

Specifications of the buzzer:

Supply voltage, V 3.3 ... 5
Buzzer type active
Consumed current, mA 30 ... 50
Signal frequency, kHz 2
Module dimensions, mm 33 x 13.