How to interface LED with Arduino

            In this tutorial, I am going to tell you how to interface an LED with Arduino. I am using the inbuilt LED of Arduino for this tutorial. Inbuilt LED is present at pin number 13. When the output signal is HIGH then LED turns on and when the output signal is LOW then the LED is off. In between on and off provided 1000ms delay observing the output.
            In void setup, the setup is provided that is pin 13 is made as an output pin and in a void loop, the instructions are provided that executes continuously. In place of ledPin directly you can put pin number or LED_BUILTIN to connect the built-in LED.

int ledPin = 13;
void setup() {
  pinMode(ledPin,OUTPUT);
}
void loop() {
  digitalWrite(ledPin,HIGH);
  delay(1000);
  digitalWrite(ledPin,LOW);
  delay(1000);
}

Output When LED ON

Output when LED OFF

           Please feel free to comment if you find anything incorrect or you want to share more information about the topic discussed above.