Virtual IoT Lab DEI

Instructions

Objective:

Learn how to control a buzzer using a push button with Arduino, demonstrating digital input and output operations.

Steps to Perform:

Click "Start Simulation" to power up the Arduino circuit
Click the push button on the circuit to activate the buzzer
The buzzer will produce sound when the button is pressed
Release the button to stop the buzzer sound
You can press and release multiple times to control the buzzer

Key Concepts:

Buzzer: An electronic component that produces sound when powered
Digital Input: Arduino reads button state (HIGH/LOW) from pin 4
Digital Output: Arduino controls buzzer (ON/OFF) through pin 3
Pull-up Resistor: Button uses internal pull-up configuration
State Logic: Button pressed = LOW state, Buzzer ON = HIGH output

Arduino Code - main.ino

            int buz = 3; // Buzzer is connected on Pin No. 3
int but = 4; // Push Button is connected on Pin No. 4
int val;

void setup( )
{
  pinMode(buz, OUTPUT); // Buzzer mode is OUTPUT.
  pinMode(but, INPUT); // Push Button mode is INPUT.
}

void loop()
{
  val = digitalRead (but); // Reads the value from Push Button whether it is pressed or not.
  if (val == LOW) 
  { 
    digitalWrite(buz,HIGH); // Buzzer is turned ON.
  }
  else
  {
    digitalWrite(buz,LOW); //  Buzzer is turned OFF.
  }
}
            
          