Smart Home Security with Arduino

Introduction: Smart home security systems have become increasingly popular as they provide enhanced safety and convenience for homeowners. In this article, we will explore the concept of smart home security and demonstrate how to create a basic system using Arduino. We will provide examples of code and a comprehensive list of components required for the project.

Project: Our project aims to create a smart home security system that can detect intrusions and send notifications to the homeowner. The system will utilize various sensors and actuators to monitor and control the security of the home. The main objectives of the project are:

1. Intrusion Detection: Implement a sensor-based system to detect unauthorized entry into the home.
2. Notification System: Send real-time notifications to the homeowner via email or SMS when an intrusion is detected.
3. Actuator Control: Activate an alarm and/or trigger other security measures in response to an intrusion.

List of Components: To build the smart home security system, the following components are required:

1. Arduino Uno (1) - [Link to purchase: example.com/arduino-uno]
2. PIR Motion Sensor (1) - [Link to purchase: example.com/pir-motion-sensor]
3. Magnetic Door/Window Sensor (1) - [Link to purchase: example.com/magnetic-sensor]
4. GSM Module (1) - [Link to purchase: example.com/gsm-module]
5. Buzzer (1) - [Link to purchase: example.com/buzzer]
6. LEDs (2) - [Link to purchase: example.com/leds]
7. Resistors (various) - [Link to purchase: example.com/resistors]
8. Breadboard and jumper wires - [Link to purchase: example.com/breadboard-jumper-wires]

Examples: Example 1: Intrusion Detection

#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>

#define PIR_PIN 2
#define LED_PIN 3

Adafruit_BME280 bme;

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  Serial.begin(9600);
  if (!bme.begin(0x76)) {
    Serial.println("Could not find a valid BME280 sensor, check wiring!");
    while (1);
  }
}

void loop() {
  int pirState = digitalRead(PIR_PIN);
  if (pirState == HIGH) {
    digitalWrite(LED_PIN, HIGH);
    float temperature = bme.readTemperature();
    float humidity = bme.readHumidity();
    Serial.print("Intrusion detected! Temperature: ");
    Serial.print(temperature);
    Serial.print(" °C, Humidity: ");
    Serial.print(humidity);
    Serial.println("%");
  } else {
    digitalWrite(LED_PIN, LOW);
  }
  delay(1000);
}

Example 2: Notification System (using GSM Module)

#include <SoftwareSerial.h>

#define RX_PIN 10
#define TX_PIN 11

SoftwareSerial gsmSerial(RX_PIN, TX_PIN);

void setup() {
  Serial.begin(9600);
  gsmSerial.begin(9600);
  delay(1000);
  gsmSerial.println("AT+CMGF=1");
  delay(1000);
  gsmSerial.println("AT+CMGS=\"+1234567890\"");
  delay(1000);
  gsmSerial.println("Intrusion detected!");
  delay(1000);
  gsmSerial.write(0x1A);
}

void loop() {
  // Do nothing
}

Conclusion: Creating a smart home security system using Arduino allows homeowners to enhance the security of their homes and receive real-time notifications in case of intrusions. By utilizing various sensors and actuators, the system can effectively detect and respond to unauthorized entry. This article provided examples of code and a comprehensive list of components to help you get started with building your own smart home security system.