Smart Home With Arduino Ethernet Shield and Teleduino (with Web App)


Introduction: Smart Home With Arduino Ethernet Shield and Teleduino (with Web App)

This project is a simple solution for those who want a smart-home system but do not have a big budget and for the lazy ones that do not want to get up from bed to turn the lights off or on.

It also is the project of a high school student for his final exams!

This is just a basic configuration but with a little more time and dedication you could customize by adding more sensors, LEDs, relays and scheduled jobs to start with the execution of a PHP script from the web server.

I am using a free web-hosting service called Altervista which includes the SQL database server (with phpMyAdmin) and the php server.

Step 1: Hardware & Software

To realize this project you will need:


  • Arduino (Mega or similar, the Uno will probably not have enough memory)
  • Ethernet Shield
  • 3 DHT 11 (temperature and humidity sensor)
  • 3 photoresistors
  • Breadboard
  • LEDs
  • 220v Relay
  • 5V fan
  • NPN 337 transistor
  • Potentiometer
  • 16 x 2 LCD
  • Resistors (220 Ω, 1 kΩ, 10 kΩ, etc)
  • Lunch box
  • Cables


  • web server (Apache)
  • database and DMBS (MySQL & phpMyAdmin)
  • php server
  • Arduino IDE

Step 2: Teleduino

So, to send the requests from the Internet to Arduino we will use a web service called Teleduino.
Just register and wait for the email containing the unique key, after that follow the instructions on how to install the libraries and how to turn a LED on or off.

Make sure to download and correctly link the library.

If you have any problems you can contact the developer of this web service.

Step 3: The Database

In order to save the data from the sensors we will need to set up a MySql database.

In this case there are 2 tables: sensor_log and users.

CREATE TABLE `sensor_log` (
  `id` smallint(6) PRIMARY KEY AUTO_INCREMENT,
  `temp_0` float DEFAULT NULL,
  `hum_0` float DEFAULT NULL,
  `temp_1` float DEFAULT NULL,
  `hum_1` float DEFAULT NULL,
  `temp_2` float DEFAULT NULL,
  `hum_2` float DEFAULT NULL,
  `light_0` float DEFAULT NULL,
  `light_1` float DEFAULT NULL,
  `light_2` float DEFAULT NULL,

CREATE TABLE `users` (
  `username` char(30) PRIMARY KEY,
  `password` char(50) NOT NULL UNIQUE,
  `is_connected` tinyint(1) NOT NULL DEFAULT '0',


Step 4: The Arduino Sketch

The Arduino I am using for this project is the Mega 2560 so you
will have to adjust the functions / pins / libraries in the .ino file if you are using a different board.

The sketch's logic is pretty simple:

In the setup() function the Arduino gets an IP address, connects to the Teleduino server and initializes the sensors.

In the loop() function it loops until a request arrives and every 60 seconds it gets the data from the sensors and sends it with the POST method to a php page that adds it to the database.

There is a custom function called .getReset() and to make it work the files Teleduino2560.cpp and Teleduino2560.h (in the libraries/Teleduino2560 folder) must be replaced.

Step 5: The Web App

The web app is composed by:

  • add.php ⇒ gets the data from the Arduino and puts it into the database
  • index.php ⇒ contains the login form
  • login.php ⇒ verifies the username / password
  • loading.php ⇒ initializes the Arduino pins with the Teleduino links
  • home.php ⇒ contains the buttons to interract with the Arduino and the graphs with the data
  • logout.php ⇒ terminates the connection to the web app
  • aboutproject.php ⇒ contains the description of the project (for exam purpose)

The buttons send the GET request to the Teleduino server that turns on / off the pin on the Arduino.

The charts are made with a library called CanvasJS.

You will find everything in the .zip file.

N.B. You will have to add the Teleduino key and the credentials to access the database !



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    Interesting, togheter with IOT, smart home is an emerging tecnology with many technology players that are investing on this. A nice job, Enrico

    1 reply

    Thank you, the secret of this proget is the customizability and the easiness of how it is done


    I’m irinakim and I’m work in the Wiznet.

    Thank you for using our product.

    We are collecting so much data using ourproduct.

    And I will post the this project on our Web site.(

    Can I post your product on our Web site?

    1 reply

    Sure! Post it, a little advertizing of me and my project would be nice :)

    If you need a better description just ask for it and we will get in touch ;)