Top 10 IoT Projects for Final Year Students in 2025

Sample Arduino Code (ESP32):

#include <WiFi.h>
#include <WebServer.h>
#include <ArduinoJson.h>

const char* ssid = "your_wifi_ssid";
const char* password = "your_wifi_password";

WebServer server(80);

// Pin definitions
const int relayPins[] = {2, 4, 5, 18, 19, 21, 22, 23};
const int pirPin = 26;
const int dhtPin = 27;

void setup() {
  Serial.begin(115200);
  
  // Initialize relay pins
  for(int i = 0; i < 8; i++) {
    pinMode(relayPins[i], OUTPUT);
    digitalWrite(relayPins[i], LOW);
  }
  
  // Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  
  Serial.println("WiFi connected!");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  
  // Setup web server routes
  server.on("/", handleRoot);
  server.on("/control", handleControl);
  server.on("/status", handleStatus);
  
  server.begin();
}

void loop() {
  server.handleClient();
  checkMotionSensor();
  delay(100);
}