Joy-IT KY-012
This Buzzer creates a sound with a frequency of 2,5kHz. The active Buzzer-module doesn't need a square wave, unlike the passiv module (KY-006), to create a sound.KY-012 Active Piezo-Buzzer module KY-012 Active Piezo-Buzzer module Contents 1 Pictures ................................................................................................................................................................ 1 2 Technical data / Short description ....................................................................................................................... 1 3 Pinout ................................................................................................................................................................... 2 4 Code example Arduino ......................................................................................................................................... 2 5 Code example Raspberry Pi ................................................................................................................................. 2 Pictures Technical data / Short description If it gets a minimum Voltage of 3.3V at its signal pin, the buzzer will create the square wave by itself.