Control LED Using Serial Monitor

Hello everyone welcome to my first instructable.

In this instructables we are going to learn how to turn LEDs on and off using serial monitor.

• A breadboard
• A LED
• A 220 ohm resistor
• An Arduino

Upload the following code to your arduino:

void setup()

{

pinMode(13, OUTPUT);

Serial.begin(9600);

while (!Serial);

Serial.println("Input 1 to Turn LED on and 2 to off");

}

void loop() {

if (Serial.available())

{

int state = Serial.parseInt();

if (state == 1)

{

digitalWrite(13, HIGH);

Serial.println("Command completed LED turned ON");

}

if (state == 2)

{

digitalWrite(13, LOW);

Serial.println("Command completed LED turned OFF");

}

}

}

Hookup all the components according to the circuit diagram above.

Now just connect the arduino to your PC now open the serial monitor (To do so navigate through tools>Serial monitor).

Now when you send 1 the LED turns on and turns off when you send 2.

Thanks for viewing. Please write your questions or suggestions below.