How to use Active Buzzer with Arduino?

1.Introduction
 

Active buzzer is a sound making element, widely used on computers, printers, alarms, electronic toys, telephones, timers, etc. It has an inner vibration source. In this project, we will use a PLUS control board to control the active buzzer to buzz.
 

2.Components Required
 

3. Component Knowledge
 

The active buzzer inside has a simple oscillator circuit which can convert constant direct current into a certain frequency pulse signal. Once active buzzer receives a high level, it will sound. The passive buzzer is an integrated electronic buzzer with no internal vibration source. It must be driven by 2K to 5K square wave instead of a DC signal. The appearance of the two buzzers is very similar, but passive buzzers come with a green circuit board, and active buzzers come with a black tape. Passive buzzers don’t have positive pole, but active buzzers have.

Note: The positive terminal (“+”/long pin) of the active buzzer is connected to pin 8, and the negative terminal (short pin) is connected to GND.
 

5.Code
 

/*
Active_buzzer 
http//www.keyestudio.com
*/
int buzzerPin = 8;
void setup ()
{
  pinMode (buzzerPin, OUTPUT);
}
void loop ()
{
  digitalWrite (buzzerPin, HIGH);
  delay (500);
  digitalWrite (buzzerPin, LOW);
  delay (500);
}

6.Result
 

Upload the project code, wire up and power up, then the active buzzer buzzes.