The buzzer used with the Raspberry Pi Pico consists of a membrane that vibrates thanks to the piezoelectric effect. This phenomenon occurs when certain materials deform under the influence of an electric field, thereby transforming electrical energy into vibrations. As a result, the buzzer can produce simple tones and melodies.Buzzers are commonly found in various devices such as alarm systems, computers, and timers.The buzzer can be very useful for adding sound to your project on the Raspberry Pi Pico.Here is the circuit diagram to make it work: