#####
              /*
      Pinout:
      8 --> BT module Tx
      9 --> BT module Rx
      */
      #include <SoftwareSerial.h>
      SoftwareSerial bluetoothdata(9,8); // RX, TX

      int ledPin = 13;      // LED 
      int pirPin = 2;                 // PIR Out pin 
      int pirStat = 0;                   // PIR status
      int calibrate = 30000;
      int flag =0;

      void setup() {
       pinMode(ledPin, OUTPUT);     
       pinMode(pirPin, INPUT);     
       Serial.begin(9600);
       bluetoothdata.begin(9600);
       Serial.println("calibrating the environment ");
       delay(calibrate);
       Serial.println("calibrating complete ");

      }
      void loop(){
       pirStat = digitalRead(pirPin); 
               if (pirStat == HIGH)
                 {        // if motion detected
                      digitalWrite(ledPin, HIGH);  // turn LED ON
                      Serial.println("Motion Detected");
                      bluetoothdata.print("1");
                      // bluetoothdata.write(incomingData);        // Write the characters to Bluetooth
                 } else {
                         Serial.println("Idle");
                         digitalWrite(ledPin, LOW); // turn LED OFF if we have no motion
                            bluetoothdata.print("Idle");
                         //  bluetoothdata.write(incomingData);        // Write the characters to Bluetooth
                 }
    }