In this tutorial you will learn how to use a buzzer (or piezo speaker) with Arduino. Buzzers can be found in alarm devices, computers, timers and confirmation of user input such as a mouse click or keystroke.
Learn how to use piezo buzzer with Arduino, how piezo buzzer works, how to connect piezo buzzer to Arduino, how to code for piezo buzzer using Arduino, how to program Arduino step by step.
An active buzzer has a built-in oscillating source, so it will make sounds when electrified. But a passive buzzer does not have such source, so it will not tweet if DC signals are used; instead, you need to use square waves whose frequency is between 2K and 5K to drive it.