2B6 Active Buzzer module

The  Active Buzzer module consists of an active piezoelectric buzzer, it generates a sound of approximately 2.5 kHz when the signal is high. 

HOW TO CONNECT AN ACTIVE BUZZER TO THE ARDUINO

Let’s build an example project that will control an active buzzer with the press of a button.

Here are the parts you will need:

• Arduino Uno
• Jumper wires
• Breadboard
• Tactile push button
• Active buzzer

To connect the active buzzer and push button to the Arduino, follow the diagram below:

HOW TO PROGRAM AN ACTIVE BUZZER ON THE ARDUINO

Once your circuit is connected, upload this code to the Arduino:

int buzzerPin = 8;
int buttonPin = 7;

void setup() {
  pinMode(buzzerPin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);
}

void loop() {
  int buttonState = digitalRead(buttonPin);

  if (buttonState == LOW) {
    digitalWrite(buzzerPin, HIGH);
  }

  if (buttonState == HIGH) {
    digitalWrite(buzzerPin, LOW);
  }
}

EXPLANATION OF THE CODE

Active buzzers are programmed just like LEDs. You digital write the buzzer pin HIGH to turn it on, and write the buzzer pin LOW to turn it off.

At the top of the sketch we declare two pin variables. The first pin variable is called buzzerPin and is set equal to Arduino pin 8. The other pin variable is called buttonPin and is set equal to pin 7.

In the setup() section the buzzerPin is set as an OUTPUT with the pinMode() function. The buttonPin is set as an INPUT with internal pullup resistor by using INPUT_PULLUP as the second argument in the pinMode() function.

In the loop() section we take a digital read of the buttonPin and store the value in a local int variable called buttonState. Then we have two if statements that say “if the buttonState is LOW then digital write the buzzer pin HIGH, and if the buttonState is HIGH then digital write the buzzer pin LOW”.

After you connect the circuit and upload the code, you should see that pressing the button turns the buzzer on.