bluetooth.ino

char data = 0;

void setup() {
Serial.begin(9600); 
}

void loop() {
 if(Serial.available() > 0)      // Send data only when you receive data:
   {
    data = Serial.read();       //read data from bluetooth
    Serial.print(data);        //print data
    Serial.print("\n");       //newline after each printing of recieved data
   }
}