Buzzer with Arduino

A buzzer or piezo speaker is an audio signaling device commonly used to produce sound. Buzzer is a very small component in electronics but can be used very smartly in multiple applications. Piezo buzzer produces sound based on the reverse principle of the piezoelectric effect. The buzzer is a less costly and light-weighted electronic device that’s why it is used in computers, alarm devices, refrigerators, microwave ovens, security devices, and so on.

There are two conductors available inside the buzzer along with a piezo crystal between them. Whenever the potential is applied across the crystal then the conductor’s position gets changed due to which a 2 to 4 kHz sound wave is produced by the buzzer.

In this article, I will explain to you how a buzzer can be operated with the help of Arduino Uno differently to generate different toned sounds. This is a very basic tutorial if you want to learn more about how they can buzzer be used in any security device then you can check my advanced-level project named Locker guard based on Arduino Uno.