An Arduino is used to interface with an LED by connecting the components in a circuit diagram. The Arduino is programmed to turn the LED on and off by writing code that sets pin 13 as an output and uses digitalWrite to switch it between HIGH and LOW states with a 1 second delay between each change.

1. Arduino interfacing with LED
-- by Prof. M.K.Deshkar

2. Components Used
1.Arduino
2.Breadboard
3.Resistor
4.LED
5.Red & Black
Wire

3. Circuit Diagram

4. 1. Connect the Arduino to your
computer using the USB cable
2. Red wire----Vin
3. black wire-------Gnd
4. resistor------- red row to the
blue row
5. LED------- long wire in the
blue row and short wire in the
black row
Make the circuit
Connection with Arduino

5. void setup () {
pinMode (13, OUTPUT);
}
void loop () {
digitalWrite (13, HIGH);
delay (1000);
digitalWrite (13, LOW);
delay (1000);
}
Program

6. Thank you