Interfacing KY-012(Active Buzzer) with Arduino

 Interfacing an Active Buzzer with Arduino

//Sketch-Straight beep

int active_buzzer =11;// connect the active buzzer to the pin 7 of Arduino.

void setup() {

  

pinMode(active_buzzer,OUTPUT);

}

void loop() {

  digitalWrite(active_buzzer,HIGH);

  delay(5);

  digitalWrite(active_buzzer,LOW);

  delay(1);

}

//Sketch-Alarm beep

int active_buzzer =11;// set a variable name active buzzer and assign pin to 3 

void setup() {

  

pinMode(active_buzzer,OUTPUT);// set pin as an output

}

void loop() {

  digitalWrite(active_buzzer,HIGH);

  delay(500);

  digitalWrite(active_buzzer,LOW);

  delay(5);

}