Arduino Web Server Without Ethernet Shield


Arduino is a popular platform for building various electronic projects, including web servers. Traditionally, an Ethernet Shield was required to connect Arduino to the internet and create a web server. However, in recent years, advancements in technology have made it possible to create an Arduino web server without the need for an Ethernet Shield. This article will explore the process of setting up an Arduino web server without an Ethernet Shield in the year 2023.

Why Arduino Web Server?

Arduino web servers are an excellent choice for projects that require remote control and monitoring capabilities. They enable you to access and interact with your Arduino project from any device connected to the internet. Whether you want to control your home automation system or monitor sensor data remotely, an Arduino web server can make it possible.

The Advancements in Technology

In the past, an Ethernet Shield was necessary to connect Arduino to the internet. However, with the emergence of IoT (Internet of Things) technologies, connecting Arduino to the internet has become more accessible and cost-effective. Newer Arduino boards, such as the Arduino MKR series and Arduino Nano 33 IoT, have built-in Wi-Fi and/or Bluetooth capabilities, allowing them to connect directly to the internet without the need for an Ethernet Shield.

Setting up Arduino Web Server without Ethernet Shield

To set up an Arduino web server without an Ethernet Shield, you will need an Arduino board with built-in Wi-Fi or Bluetooth capabilities. Follow the steps below to get started:

Step 1: Gathering the Required Components

Before you begin, ensure you have the following components: – Arduino board with built-in Wi-Fi or Bluetooth capabilities – USB cable for connecting Arduino to your computer – Breadboard (optional) – LEDs and resistors (optional, for demonstration purposes)

Step 2: Installing the Required Libraries

To create a web server on Arduino, you will need to install the necessary libraries. Open the Arduino IDE and go to “Sketch”> “Include Library”> “Manage Libraries.” Search for and install the following libraries: – WiFiNINA (for Arduino MKR boards) – WiFi101 (for Arduino WiFi Shield 101) – WiFi (for Arduino boards with built-in Wi-Fi)

Step 3: Writing the Code

Once the libraries are installed, you can start writing the code for your Arduino web server. Begin by including the required libraries at the beginning of your sketch. Then, set up your Wi-Fi or Bluetooth connection and define the necessary variables. Next, create the necessary HTML content to be displayed on the web page. This can include buttons, text boxes, or any other interactive elements you want to include.

Step 4: Handling HTTP Requests

To handle HTTP requests from the clients, you need to set up a server and define the necessary routes. These routes will determine how your Arduino responds to specific requests. For example, you may define a route to turn an LED on or off based on an HTTP request.

Step 5: Testing and Deployment

Once you have written the code, upload it to your Arduino board using the Arduino IDE. Connect your Arduino to a power source and ensure it is connected to the internet. You can then access your Arduino web server by entering its IP address in a web browser on any device connected to the same network.


Creating an Arduino web server without an Ethernet Shield is now easier than ever, thanks to the advancements in technology. With Arduino boards equipped with built-in Wi-Fi or Bluetooth capabilities, you can easily connect your Arduino to the internet and create web servers for remote control and monitoring purposes. By following the steps outlined in this article, you can set up your Arduino web server and start exploring the endless possibilities it offers in 2023 and beyond.

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