In this project, we will demonstrate how to interface a buzzer with an Arduino board. The buzzer will be used to generate sound or alert signals based on the Arduino’s control.

Hardware Required:

1. Arduino board (e.g., Arduino Uno)
2. Buzzer (passive or active)
3. Jumper wires

Circuit Diagram: Connect the components as follows:

Connection Table: Here’s a connection table for the buzzer and Arduino:

Below is the Arduino code to control the buzzer:

//www.projectkitsandparts.com

//Define the Arduino pin connected to the buzzer

const int buzzerPin = 2;

void setup() {

  // Set the buzzer pin as an output

  pinMode(buzzerPin, OUTPUT);

}

void loop() {

  // Generate a tone on the buzzer

  digitalWrite(buzzerPin, HIGH);

  delay(1000);

  // Stop the tone

  digitalWrite(buzzerPin, LOW);

  delay(1000);

}

Code Explanation:

1. The buzzerPin variable is declared and set to the Arduino pin connected to the buzzer.
2. In the setup() function, the buzzerPin is set as an output using the pinMode() function.
3. The loop() function is where the buzzer control happens.
4. The program waits for 1 second using delay(1000)
5. The loop repeats, generating the tone and stopping it continuously.

Project Steps:

• Connect the Arduino board to your computer via USB.
• Open the Arduino IDE (Integrated Development Environment) on your computer.
• Create a new sketch and copy-paste the code provided into the IDE.
• Make sure the correct Arduino board and port are selected under the “Tools” menu.
• Click the “Upload” button to compile and upload the code to the Arduino board.
• Connect the buzzer’s positive terminal (usually marked as “+” or “S”) to the specified Arduino pin.
• Connect the buzzer’s negative terminal (usually marked as “-” or “GND”) to the Arduino’s GND pin.
• When the code runs, the buzzer will generate a continuous tone with a frequency of 1000 Hz, followed by a 1-second pause, and then repeat.