Skip to content

README.md

Latest commit

 

History

History
104 lines (67 loc) · 2.12 KB

README.md

File metadata and controls

104 lines (67 loc) · 2.12 KB
Raw

💡 Arduino LED Blink (Digital Output Example)

A simple beginner-friendly Arduino project to blink an LED using digital output. This project demonstrates how to configure a GPIO pin as OUTPUT and toggle it using digitalWrite() with delays.

🚀 Project Overview

This project blinks an LED connected to an Arduino board at a fixed interval (600 ms ON / 600 ms OFF). It is one of the most basic and important starter projects for learning embedded systems and microcontroller GPIO control.

🧰 Components Required

  • Arduino Board (Uno / Nano / Mega / etc.)
  • LED (if not using onboard LED)
  • 220Ω Resistor (for external LED)
  • Jumper Wires
  • Breadboard (optional)

🔗 Simulation Link

👉 Open Simulation

🔌 Circuit Diagram

👉 View Circuit Diagram

🔌 Circuit Connection

✅ Using Onboard LED

If your board supports onboard LED on the selected pin, no external wiring is required.

✅ Using External LED

Arduino Pin Component
Pin 2 LED Anode (+)
GND LED Cathode (–) via 220Ω resistor

📜 Arduino Code

#define LED 2

void setup() {
  pinMode(LED, OUTPUT);
}

void loop() {
  digitalWrite(LED, HIGH);
  delay(600);

  digitalWrite(LED, LOW);
  delay(600);
}

⚙️ How It Works

  • #define LED 2 → assigns GPIO pin 2 as LED pin
  • pinMode(LED, OUTPUT) → sets the pin as output
  • digitalWrite(HIGH) → turns LED ON
  • digitalWrite(LOW) → turns LED OFF
  • delay(600) → waits 600 milliseconds between states

Blink Timing:

  • ON Time = 600 ms
  • OFF Time = 600 ms
  • Total Cycle = 1.2 seconds

▶️ How to Run

  1. Open Arduino IDE
  2. Select your board and COM port
  3. Paste the code
  4. Click Upload
  5. Observe LED blinking

🎯 Learning Outcomes

  • GPIO Output control
  • Using pinMode() and digitalWrite()
  • Understanding delays and timing
  • Basic embedded programming concept

👨‍💻 Author

Bishnupriya