• LED (any color) - 1 no.
• Resistor - 300 ohms - 1 no.
• Arduino Uno - 1 no.
• Jumper Wires - 2 nos.
• USB AB Cable for powering the Arduino Uno - 1 no.
• Bread board - 1 no.
• Arduino IDE software (download and setup from https://www.arduino.cc/en/Main/Software)

/* Blink an LED connected to Arduino Uno */

#define LED 8 // Define blinking LED pin

void setup() {

Serial.begin(115200);

pinMode(LED, OUTPUT); // Initialize the LED pin as an output

}

// The loop function runs over and over again forever

void loop() {

Serial.println("Turning on LED");

digitalWrite(LED, HIGH); // Turn the LED on by making the voltage HIGH

delay(1000); // Wait for one second

Serial.println("Turning off LED");

digitalWrite(LED, LOW); // Turn the LED off by making the voltage LOW

delay(1000); // Wait for one second

}

1. Stick the two leads of the LED on the bread board.
2. Connect a jumper wire between the LED's cathode (shorter lead) and GND pin on the Arduino Uno board.
3. Stick the two leads of a 330 ohm resistor on the bread board such that one end of the resistor connects to the LED's anode (longer lead).
4. Connect a jumper wire between the other end of the 330 ohm resistor on the breadboard and PIN 8 on the Arduino Uno board.
5. Connect the USB AB cable between the laptop's USB port and Arduino Uno's power input port.
6. Open Arduino IDE on the laptop and copy-paste the sketch (code) shown above.
7. Upload the Arduino sketch from the laptop to Arduino Uno board.
8. Open Serial Monitor (click Tools --> Serial Monitor) on your Arduino IDE and watch the messages "Turning on LED" and "Turning off LED" displayed alternately every 1 second apart.
9. Verify that the LED connected to Arduino Uno board blinks every 1 second.