Bluetooth based home automation

//శాస్త్ర ప్రచారక్volunteer: బ్లూ టూత్ ప్రోగ్రాం

char data = 0;                //Variable for storing received data

void setup() 

{

  Serial.begin(9600);         //Sets the data rate in bits per second (baud) for serial data transmission

  pinMode(12, OUTPUT);    

  pinMode(13, OUTPUT);        //Sets digital pin 13 as output pin

}

void loop()

{

  if(Serial.available() > 0)  // Send data only when you receive data:

  {

    data = Serial.read();      //Read the incoming data and store it into variable data

    Serial.print(data);        //Print Value inside data in Serial monitor

    Serial.print("\n");        //New line 

    if(data == '4')            //Checks whether value of data is equal to 1 

     {

       digitalWrite(12, HIGH);  //If value is 1 then LED turns ON

       digitalWrite(13, HIGH); 

     }

    else if(data == '3')       //Checks whether value of data is equal to 0

     {

       digitalWrite(12, LOW);   //If value is 0 then LED turns OFF

       digitalWrite(13, HIGH); 

     }

else if(data == '2')       //Checks whether value of data is equal to 0

     {

       digitalWrite(12, HIGH);   //If value is 0 then LED turns OFF

       digitalWrite(13, LOW); 

     }

else if(data == '1')       //Checks whether value of data is equal to 0

     {

       digitalWrite(12, LOW);   //If value is 0 then LED turns OFF

       digitalWrite(13, LOW); 

     }

  }                            

 

}