The Piezoelectric Passive Buzzer is an electronic audio component that produces sound when driven by an external frequency or PWM signal. Built using piezoelectric technology, this passive buzzer allows flexible sound generation, making it ideal for creating alarms, notifications, melodies, and custom audio effects in embedded systems and electronic projects.
Unlike active buzzers, passive buzzers do not contain an internal oscillator, giving users complete control over sound frequency and tone generation through microcontrollers such as Arduino, ESP32, Raspberry Pi, STM32, and other development boards.