What Is Arduino Web Server?


Angela Bailey

An Arduino web server allows you to create a website hosted on an Arduino board. This means that you can access and control your Arduino projects from any device with a web browser, such as a computer, smartphone, or tablet. It opens up a whole new world of possibilities for remote monitoring and control of your projects.

Why Use an Arduino Web Server?

An Arduino web server is a great tool for projects that require remote access. Instead of having to physically interact with your project, you can control it from anywhere in the world as long as you have an internet connection. This is particularly useful for home automation systems, security systems, and IoT (Internet of Things) projects.

How Does an Arduino Web Server Work?

To create an Arduino web server, you need the following components:

  • An Arduino board
  • An Ethernet or Wi-Fi shield
  • A router or network connection

The Ethernet or Wi-Fi shield allows the Arduino board to connect to the internet and communicate with other devices. Once connected, the Arduino can serve web pages using HTTP (Hypertext Transfer Protocol) to respond to requests from clients (web browsers).

When a client requests a web page from the Arduino server, the server processes the request and sends back the appropriate HTML content. This can include text, images, buttons, forms, and more. The client’s web browser then renders this HTML content and displays it to the user.

Setting Up an Arduino Web Server

To set up an Arduino web server, follow these steps:

  1. Connect your Ethernet or Wi-Fi shield to your Arduino board.
  2. Connect your Arduino board to your router or network.
  3. Write the Arduino code to serve web pages and handle client requests.
  4. Upload the code to your Arduino board using the Arduino IDE.

The code for an Arduino web server typically involves configuring the Ethernet or Wi-Fi shield, setting up routes for different URLs, and defining how to handle requests for each route. You can also include additional functionality, such as reading sensor data or controlling actuators based on user input.

Interacting with an Arduino Web Server

Once your Arduino web server is up and running, you can interact with it through a web browser. Simply enter the IP address of your Arduino board in the address bar of any device connected to the same network. You should see the web page served by your Arduino server.

Depending on how you’ve set up your web page, you can interact with your Arduino project by clicking buttons, filling out forms, or sending HTTP requests. The Arduino server will process these interactions and respond accordingly, allowing you to control your project remotely.


An Arduino web server is a powerful tool for creating remote access to your projects. With just an Arduino board and an Ethernet or Wi-Fi shield, you can serve web pages and control your projects from anywhere in the world. Whether it’s home automation, security systems, or IoT projects, an Arduino web server opens up endless possibilities for remote monitoring and control.

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