Home Security Alarm or a Motion Detector Using Arduino,P.I.R Sensor and LCD.

Hi Everybody,

Today I am Going to show you how to make a interesting,wonderful,cheap home security alarm.This Gadget Helps you to protect your house from thieves.In this project i am going to use a Freeduino Board(Arduino Compatible),P.I.R Sensor module,LCD and some other components.This Project can either powered with 9V Battery or with U.S.B of your computer.

How this Project Works?

All the body generate some heat energy in the form of infrared which is invisible to human eyes.But,It can be detected by electronic sensor.These type of sensor is made up of crystaline material that is Pyroelectric.In this project,we are using P.I.R. Motion Sensor Module as an infrared sensor that generates electric charge when exposed in heat and sends a signal to arduino.According to level of the infrared in front of sensor,Arduino displays the status on L.C.D and start buzzing speaker and glows the L.E.D.A simple program is running on arduino which checks sensor if anything is moved or new object has been detected.

Materials Required:-

1. 1 x Arduino Uno(You can use any compatible)

2. 1 x P.I.R Sensor Module.

3. 1 x L.C.D(16 X 2)

4. 1 x 9V Battery

5. 1 x 9V Battery Clip

6. 1 x L.E.D

7. 1 x Piezo Buzzer(I am using Speaker instead)

8. 1 x Breadboard

9. Some Jumper Wires

10. An USB Cable(Only for programming)

11. A Computer(Only for programming)

Step 1: Connecting the P.I.R Sensor to Arduino..

1.Connect Vcc pin of P.I.R sensor to positive terminal of Arduino(5V).

2.Connect Gnd pin of P.I.R sensor to any ground pin of Arduino.

3.Connect Out pin of P.I.R sensor to Pin no. -7 of Arduino.

Step 2: Connecting L.E.D and Piezo Buzzer to Arduino..

Connecting L.E.D:-----

Connect Positive terminal(Longer Lead) Of L.E.D To Arduino Pin no. 13.

Connect Negative terminal(Shorter Lead) Of L.E.D To Any Ground Pin.

Connecting Piezo Buzzer:-----

Connect Positive terminal(Red Wire) Of Buzzer To Arduino Pin no. 10.

Connect Negative terminal(Black Wire) Of Buzzer To Any Ground Pin.

Step 3: Connecting L.C.D to Arduino

To wire your LCD screen to your Arduino, connect the following pins:

LCD RS pin to digital pin 12

LCD Enable pin to digital pin 11

LCD D4 pin to digital pin 5

LCD D5 pin to digital pin 4

LCD D6 pin to digital pin 3

LCD D7 pin to digital pin 2

Additionally, wire a 10K pot to +5V and GND, with it's wiper (output) to LCD screens VO pin (pin3).

Step 4: Programming Arduino..

1.Download Arduino IDE 1.0.6 from https://www.arduino.cc/en/main/software.

2.Connect Your Arduino to your computer using USB Cable.

3.Open Arduino IDE,choose your correct board from Tools--Boards

4.Choose Your Correct Port from Tools--Serial Port

5.Click On Pir_Sensor.ino which is given below in the Attachment.

6.Copy the following sketch which appears in your Web Browser to your Arduino Sketch Page.

7.Click On Upload Icon or Goto File -- Upload

That's it!

Step 5: Conclusion.

Now, all the hard works are done. It's time to enjoy with your new gadget. Just plugin your arduino to your computer or plug the 9v battery on VIN and GND pin of your arduino and mount it to appropriate place.

If you have any questions or run into any issues with this project, feel free to leave a comment or give me a call at [phone]. You can also reach out via email at [e-mail].

For your convenience, I've included the circuit diagram on the conclusion page and attached the Arduino sketch file.

If you enjoyed this project, please consider voting, sharing, and liking this instructable.

Thanks!