Descrição

This is a active buzzer so its easy in use. You just apply voltage to the buzzer and it makes sound. Disadvantage is that you can’t determine the frequency of the sounds, for this you need a passive buzzer.SchematicModule pin – = GND Module pin S = +5VConnection to ArduinoArduino digital pin 8 –> Module pin SArduino GND –> Module pin ————————————————–Example code————————————————//Example code KY012 active buzzerint speakerPin = 8;void setup () { pinMode (speakerPin, OUTPUT);}void loop () { analogWrite (speakerPin, 255); delay (50); analogWrite (speakerPin, 0); delay (10);}