Project 8 Active Buzzer

1.Introduction

Active buzzer is widely used on computer, printer, alarm, electronic toy, telephone, timer etc as a sound making element. It has an inner vibration source. Simply connect it with 5V power supply, it can buzz continuously.

2.Hardware Required

• Arduino Board *1

• USB Cable *1

• Active Buzzer*1

• Breadboard*1

• Breadboard Jumper Wires

3.Circuit Connection

When connecting the circuit, pay attention to the positive & the negative poles of the buzzer. In the photo, you can see there are red and black lines. When the circuit is finished, you can begin programming.

4.Sample Code

Program is simple. You control the buzzer by outputting high/low level.

int buzzer=8;// initialize digital IO pin that controls the buzzer

void setup() 
{ 
    pinMode(buzzer,OUTPUT);// set pin mode as “output”
}

void loop() 
{
	digitalWrite(buzzer, HIGH); // produce sound
}

5.Result

After downloading the program, the buzzer experiment is completed. You can see the buzzer is ringing.