Arduino UNO Smart Surveillance System with ESP8266 WiFi, PIR Motion Sensor & Camera Module

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The Arduino UNO Smart Surveillance System is an advanced IoT-based security project that integrates a camera module, PIR motion sensor, WiFi communication, and SD card storage for real-time monitoring and data logging. This intelligent system is designed for smart home security, motion detection alerts, and remote surveillance applications.

By combining multiple modules such as the ESP8266 WiFi module, PIR motion sensor, OV7670 camera module, and micro SD card module, this project provides a powerful and scalable DIY security solution.

 Project Overview

This smart surveillance system includes:

  • Arduino UNO as the main controller

  • OV7670 Camera Module for image capture

  • PIR Motion Sensor for human movement detection

  • ESP8266 WiFi Module for wireless communication

  • Micro SD Card Module for local data storage

  • Breadboard-based prototyping setup

The system detects motion, captures images, stores them on an SD card, and can transmit alerts via WiFi.

 How the System Works

  1. The PIR motion sensor detects human movement within its range.

  2. The Arduino UNO triggers the camera module when motion is detected.

  3. Captured images are saved to the micro SD card module.

  4. The ESP8266 WiFi module sends real-time notifications or uploads data to a cloud server.

  5. The system continuously monitors the environment for enhanced security.

Code:
/*
  Arduino UNO Smart Surveillance System
  This code interfaces with a PIR motion sensor, an MLX90614 temperature sensor,
  an ESP8266 WiFi module, and a Micro SD card module. The system detects motion
  using the PIR sensor, reads temperature data from the MLX90614, and logs data
  to a Micro SD card. The ESP8266 module is used to send alerts over WiFi when
  motion is detected.
*/

#include <Wire.h>
#include <Adafruit_MLX90614.h>
#include <SPI.h>
#include <SD.h>

#define PIR_PIN 2
#define SD_CS_PIN 10

Adafruit_MLX90614 mlx = Adafruit_MLX90614();
File dataFile;

void setup() {
  Serial.begin(9600);
  pinMode(PIR_PIN, INPUT);
 
  // Initialize MLX90614
  mlx.begin();
 
  // Initialize SD card
  if (!SD.begin(SD_CS_PIN)) {
    Serial.println("SD card initialization failed!");
    return;
  }
  Serial.println("SD card initialized.");
 
  // Initialize ESP8266
  Serial1.begin(115200); // ESP8266 connected to Serial1 (D0, D1)
  Serial1.println("AT");
}

void loop() {
  if (digitalRead(PIR_PIN) == HIGH) {
    Serial.println("Motion detected!");
   
    // Read temperature
    double temp = mlx.readObjectTempC();
    Serial.print("Temperature: ");
    Serial.print(temp);
    Serial.println(" *C");
   
    // Log data to SD card
    dataFile = SD.open("datalog.txt", FILE_WRITE);
    if (dataFile) {
      dataFile.print("Motion detected! Temp: ");
      dataFile.print(temp);
      dataFile.println(" *C");
      dataFile.close();
      Serial.println("Data logged.");
    } else {
      Serial.println("Error opening datalog.txt");
    }
   
    // Send alert via ESP8266
    Serial1.println("AT+CIPSTART=\"TCP\",\"192.168.1.100\",80");
    delay(1000);
    Serial1.println("AT+CIPSEND=18");
    delay(1000);
    Serial1.println("GET /alert HTTP/1.1");
    delay(1000);
  }
  delay(1000);
}

 Key Features

  • Motion-activated image capture

  • Wireless alert system using WiFi

  • Local image storage via SD card

  • Low-cost DIY surveillance solution

  • Expandable for IoT cloud integration

  • Suitable for smart home automation projects

 Applications

  • Smart home security system

  • IoT-based surveillance project

  • Motion detection camera system

  • Wireless security monitoring

  • Office and warehouse security prototype

  • Engineering and final-year IoT projects

This Arduino UNO IoT surveillance system using ESP8266 and PIR sensor demonstrates the integration of embedded systems, wireless communication, and image processing. It is ideal for students, hobbyists, and developers looking to build a smart security solution using Arduino.

 

IOT & SMART SYSTEM PROJECTS

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  7. Raspberry Pi Zero W and GSM SIM900 Based Ultrasonic Distance Measurement System
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  9. Arduino UNO Environmental Monitoring System with OLED & 16x2 I2C LCD Display
  10. Arduino UNO-Based Smart Home Automation System with Flame and IR Sensors 
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  14. Arduino-Based Automatic Cooker Using Servo Motors, DC Stirrer Motor, Temperature Sensor and Relay-Controlled Heater
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  1. RFID-Based Smart Traffic Control System (Arduino Mega)
  2. Arduino UNO Traffic Light Control System – Smart LED Signal Project
  3.  Arduino UNO Controlled Traffic Light System with Joystick Interface

ROBOTICS PROJECTS
  1. Arduino UNO Smart Obstacle Avoiding Robot (Ultrasonic + IR + GSM)
  2. Arduino-Powered Autonomous Obstacle Avoidance Robot with Servo Control
  3. Arduino Nano Bluetooth Controlled Line Follower Robot Using L298N Motor Driver
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  1. Arduino UNO Color Sensor + Proximity System (TCS3200 + Inductive)
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  6. Arduino UNO Smart Water Quality Monitoring System with pH Sensor, Turbidity Sensor and LCD Display

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