This is a simple yet enjoyable twig to use. The piezo can be connected to digital outputs and will emit a tone when the output is high. Alternatively, it can be connected to an analog pulse-width modulation output to generate various tones and effects. If you would like to connect Grove - Buzzer as well as other Grove modules to Arduino boards, we recommend Grove Base Shield V2.0 for Arduino.
Comparision
Product Specifications Features
Grove-Buzzer Resonant frequency: 2300±300Hz
sound output?>85 dB active: requires only DC voltage, loud sound
Grove Passive Buzzer Resonant frequency: 2700Hz
sound output?>80 dB passive: requires AC signal, pleasant sound
Application
An add-on for any kind of human-machine interface
Microwave ovens
Doorbell
Alarm device
Electrical alarm
Timer