Project HSS

Security is the main thing to safeguard our things. In today scenario thief’s and theft are increased due to the loss of security. Due to that loss of security some people losses their money, jewellery, and more. So, we need a system which authenticate us and verify our identity to open the door and we need to know when someone hitting or destroying our door. When this happens, we need a system to tell us that some one hitting or destroying the door. And also, we need to make that system at affordable price to reach the all people. To solve this all problem, we come up with the solution called home security system. To get the Source Code you can visit Github Repository.

Requirements

Components Uses
✔  ESP8266 Microcontroller(NodeMCU) + Wi-Fi Module It is a microcontroller (decision maker in project) and it has WIFI to connect to internet
✔  Switch To get status of the door
✔  Servo motor To open the door lock
✔  Door lock To lock the door
✔   Vibrating Sensor SW-420 To get the vibration status occurring at the door
✔  ThingSpeak.com To make the connect between the project with app over the internet
✔  MIT App Inventor To create the app
✔  Power Source To power the project
✔  Android Phone To use the app

Explanation

Here you can see in figure is a block diagram that NodeMCU is connected to Vibration sensor, Wi-Fi module, Servo motor, Switch and power source. For first time use, user need to register and create password for their product with the unique reference ID allotted to that product. The created password and reference ID will get stored on CloudDB. To open the door, user should turn on the data transfer and click scan button on the app that we created using the MIT app inventor and they need to scan their fingerprint. If the fingerprint is matched it will send the Open() signal along with the reference id to NodeMCU. Then the Arduino checks if the Reference Id matches or not. If it matches then it will open the door lock using the servo motor. Then it wait for if the button is become '0' if it became '0' NodeMCU send door_opened() function to app, then the app will save that information with time in CloudDB. If button become '1' NodeMCU send door_closed() signal to app this also will get saved in cloudDB. We can get this info later whenever we want. Mean While if the strong vibration is produced in the door. NodeMCU decide it as someone destroying the door and send Alert() to the app.

Hardware configuration

  • We gona use Arduino IDE to Program the NodeMCU. To install and Configure the Arduino IDE for NodeMCU, follow the instruction provided in this Page , Highly recomended you to read the complete document and try to make simple blink led project using nodemcu.
  • Then open the Arduino IDE and create the New File by File -> New
  • Enter the below Code. you can also view the code on github

Here we use the Arduino IDE to program the NodeMCU microcontroller. The library used in code are listed below.

#include<ThingSpeak.h>
#include<ESP8266WiFi.h>
#include<ESP8266WebServer.h>
#include<Servo.h>

ThingSpeak.h Library is used to link the nodeMCU to the Thingspeak server. ESP8266WiFi.h is the WiFi library which used to connect the nodeMCU to the internet via the local Hotspot. For to connect to internet we should mention the SSID and Password in our code. Servo.h Library is used to control the servo motor to open and close the door lock. Then we Define the D2 for Door lock, D4 for Vibration, D5 for Door Open Close status in the code. Serial.begin(115200); is used to display the result in Serial Monitor to debug the pogram in the bandrate of 115200.

Then using pinMode(pin,INPUT/OUTPUT) is used to define whether the pin is input or output. We define D4 and D5 pin as the INPUT.

WiFi.begin(ssid, password); beigns the wifi connect with the ssid mentioned in the code. ThingSpeak.begin(client); begins the connection to the thighspeak via the wifi client.

ThingSpeak.readLongField(channel name, field number, read api key); is used to get the command updated on thingspeak by the app.

The function checkrefid(string); checks the command and the REFID. IF it matches only it will Proceed for the further action.

If the command get from the Thingspeak first field is “REFID+09” it will open the door lock. If the command get is “REFID+21” nodeMCU will close the door lock. drservo.write(90); rotates the servo motor to 90degree, lock knob is attached to servo motor as shown in the figure 3.4, so the lock will get opened. similarly drservo.write(0); will close the door lock by rotating the servo motor.

Vibbbb() function check checks for the vibration. If the vibration is measured as more than 10,000 it writes 555 on the thingspeak field 3, in app it will show as “No vibration detected”. Suppose if the vibration is measured in between 10,000 and 20,000 it writes 666 on the thingspeak field 3, in app it will show as “Medium vibration detected”. If the vibration is measured as more than 30,000 it writes 666 on the thingspeak field 3, in app it will shown as “High vibration detected” ThingSpeak.writeField(channel number, filed number, value, write api key); is used to enter the value in the particular field.

Then it check the digital pin D5 which is where the switch like mechanism attached to door as shown in figure 3.2 is connected. If D5 is HIGH it will write the 936 on the thingspeak in field 2, in app it is shown as “door closed”. If D5 is LOW it will write the 110 on the thingspeak in field 2, in app it is shown as “door opened”. digitalRead(D5); is used to read the voltage at D5. The above process will get looping till the power is supplied to the NodeMCU.

  • Now you need to install the library ThingSpeak.h, ESP8266WIFI.h., ESP8266WebServer.h, Servo.h
  • You can install this libraries from Tools->Manage Libraries
  • Then click tick (✔) symbol to compile the program
  • Then upload the program to the NodeMCU by clicking the upload icon (→).
  • Now connect circuit as shown in the Circuit Diagram.

Circuit Diagram

Here you can see in figure is the circuit diagram used for our Home Security project. Here NodeMCU is the common component which connected to the all-other components. The circuit diagram is quite simple. Here we use the 3digital pin D2, D4andD5. D2 digital pin is connected to servo motor to open the door lock. Digital pin D5 is connected to Switch like mechanism attached to the door as shown in the image, to keep track the status of the door. Using this microcontroller knows whether the door is opened or closed. It will Be 1 if the door is closed and it will be 0 If the door is opened. Digital pin D4 is connected to the Vibration sensor Sw-420 as shown in the image. From which the vibration occurred at the door will be detected. 5v and ground from the Nodemcu are connected to the vibration sensor and servomotor as shown in the figure. 5v is connected to the switch as shown in the figure

App developmet in MIT app inventor

  • I recommend you to learn mit app inventor by doing simple projects here
  • I give the link to the .aia file which you can import on the mit app inventor and make changes in the app
  • I also give the link to app to download
  • Note: Here i used the fingre print reader external extension from here
Download .aia file Download .apk file

Setting up Thingspeak.com

  • Before dive into the thingspeak, visit this blog and try to do this simple project in this article to get familiare with the thingspeak.
  • First Register and Login to the Thingspeak.com
  • Then create the new channels with 3 field as shown in the image
  • Then in the arduino program change the channel number, write api key, read api key to the thigspeak generated values
  • Also Change the SSID, Password to your respective local wifi SSID and Password
  • You can see the values updated by the nodemcu in the private/public view.

Download PPT and Report

Download PPT
Download Report

Features

Security at your finger tips

Access over the internet

Track your door status

View door log on the app

Track your door vibration on app to protect your home

About

Aim of the Project is to give the consumers, a 2nd layer of the security system for their home to safeguard their valuable things. This project provides us a two-factor authentication for our Home. In this project we use the ESP8266 microcontroller to get the signal from phone through Wi-Fi and based on that instruction microcontroller decide to give instruction to the Servo Motor. The Servo motor is connected to the door lock. To Open the door, user need to install the app that we designed using MIT app inventor, then they need to connect to internet. Then they need to verify the fingerprint or Enter the password in the app, if the password entered is correct the app will send open() signal to the Microcontroller via Wi-Fi then ESP8266 give open signal to the servo motor to open the door. The door opened or closed information is got by the button mechanism and the information is stored in MIT app inventor CLOUDDB with the time. Vibration Sensor connected to ESP8266 to sense, is someone break the door and send the information to app. User can able to get when door opened information from cloudDB in app.

Team

P Cibi (A) Hari

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B Baranitharan

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M Niyas Khan

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