Bluetooth_led-on_off.ino

char Incoming_value = 0; //Variable for storing Incoming_value
void setup()
{
    Serial.begin(9600);  //Sets the data rate in bits per second (baud) for serial data transmission
    pinMode(13, OUTPUT); //Sets digital pin 13 as output pin
}
void loop()
{
    if (Serial.available() > 0)
    {
        Incoming_value = Serial.read(); //Read the incoming data and store it into variable Incoming_value
        Serial.print(Incoming_value);   //Print Value of Incoming_value in Serial monitor
        Serial.print("\n");             //New line
        if (Incoming_value == '1')      //Checks whether value of Incoming_value is equal to 1
            digitalWrite(13, HIGH);     //If value is 1 then LED turns ON
        else if (Incoming_value == '0') //Checks whether value of Incoming_value is equal to 0
            digitalWrite(13, LOW);      //If value is 0 then LED turns OFF
    }
}