LED blinking using Arduino

Introduction:

Learning to blink an LED with an Arduino is the "Hello World" of embedded systems. It's easy, enjoyable, and a great place to start for electronics and coding beginners. 

Components Required:

Component	Quantity
Arduino Uno (or any Arduino board)	1
LED (Any color)	1
220-ohm Resistor	1
Breadboard	1
Jumper Wires	As needed
USB Cable	1

Circuit Diagram:

Connection Details:

• Connect the long leg (anode) of the LED to Arduino pin 13

• Connect the short leg (cathode) to one end of the 220-ohm resistor

• Connect the other end of the resistor to GND (Ground)

Arduino code:

void setup() {

  pinMode(3, OUTPUT); 

}

void loop() {

  digitalWrite(3, HIGH);

  delay(1000);           

  digitalWrite(3, LOW);  

  delay(1000);            

}

How It Works:

• The setup() function runs once and sets pin 13 as an output.

• The loop() function turns the LED on and off repeatedly, with a 1-second delay.

• You can change the delay to make it blink faster or slower.

Output:

Once you upload the code to the Arduino, you’ll see the LED turn ON and OFF every second

Conclusion: 

That’s it! You’ve just completed your first Arduino project. This simple blinking LED is your first step into a world of automation, robotics, and IoT.