Virtual IoT Lab DEI

Instructions

Objective:

Learn how a slide switch works as a digital input to control an LED output based on switch position.

Steps to Perform:

Click "Start Simulation" to power up the Arduino circuit
Click on the slide switch to toggle its position
Observe how the LED turns ON when switch is in HIGH position
Click the switch again to toggle back
The LED will turn OFF when switch is in LOW position

Key Concepts:

Slide Switch: Two-position switch that maintains its state (ON/OFF)
Digital Input: Switch provides HIGH (5V) or LOW (0V) signal
Digital Output: Arduino writes HIGH/LOW to LED pin to control it
digitalRead(): Reads switch state from digital pin 10
digitalWrite(): Sets LED pin HIGH (ON) or LOW (OFF)

Arduino Code - main.ino

            const int switchPin = 10;  // Pin connected to slide switch
const int ledPin = 9;      // Pin connected to LED

void setup() {
  pinMode(switchPin, INPUT);   // Configure switch pin as input
  pinMode(ledPin, OUTPUT);     // Configure LED pin as output
}

void loop() {
  int switchState = digitalRead(switchPin);  // Read switch state (HIGH or LOW)

  if (switchState == HIGH) {
    digitalWrite(ledPin, HIGH);  // Turn LED ON
  } else {
    digitalWrite(ledPin, LOW);   // Turn LED OFF
  }
}
          