Arduino UNO LED Delay Circuit Simulation

Bring your projects to life with our Arduino UNO LED Delay Circuit Simulation! It's perfect for beginners who to master timing and circuits.

BeginnerFull instructions provided41

Things used in this project

Hardware components

Arduino UNO

LED (generic)

Rocker Switch, SPST

Jumper wires (generic)

Software apps and online services

PCBX Online Simulation

Story

Introduction

This is a simple LED delay circuit that uses Arduino UNO, an SPST switch, and an LED.

Description

Components:

Arduino UNO board

LED (5mm)

220Ω resistor

SPST switch

Breadboard

Jumper wires

Assembly:

1. LED: Connect the anode to pin 8, and cathode through a 220Ω resistor to GND.

2. Switch: Connect one terminal to 5V, the other to pin 2, and the common to GND.

Operation:

When the switch is pressed, the LED light turns on, and when the switch is toggled back, the LED light turns off after a delay of five seconds.

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Code

Arduino UNO LED Delay Circuit

// Define the pins connected to the LED and the switch
const int ledPin = 8;  // Pin connected to the LED
const int switchPin = 2;  // Pin connected to the switch

// Variable to store the LED state
bool ledState = false;  // Initial LED state is off

void setup() {
  // Set the LED pin mode to output
  pinMode(ledPin, OUTPUT);
  // Set the switch pin mode to input with internal pull-up resistor
  pinMode(switchPin, INPUT_PULLUP);  // Using internal pull-up resistor
}

void loop() {
  // Read the switch state
  int switchState = digitalRead(switchPin);
  
  // If the switch is pressed (switch state is LOW because of the internal pull-up resistor)
  if (switchState == LOW) {
    // Turn on the LED
    digitalWrite(ledPin, HIGH);
    // Delay for a period of time, for example, 5 seconds
    delay(5000);
    // Turn off the LED
    digitalWrite(ledPin, LOW);
  }
}