• LED (any color) - 1 no.
• Arduino Uno - 1 no.
• USB AB Cable for powering the Arduino Uno - 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 13 // 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. Connect the LED's anode (longer lead) to digital Pin 13 of Arduino Uno board.
2. Connect the LED's cathode (shorter lead) to digital GND pin of Arduino Uno board.
3. Connect the USB AB cable between the laptop's USB port and Arduino Uno's power input port.
4. Open Arduino IDE on the laptop and copy-paste the sketch (code) shown above.
5. Upload the Arduno sketch from the laptop to Arduino Uno board.
6. 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.
7. Verify that the LED connected to Arduino Uno board blinks every 1 second.