How to Make an ESP32 LED Web Server?

ESP32 webserver

In this guide, we'll show you how to create an ESP32 LED web server step by step. This project allows you to control LED lights using a web interface served by the ESP32 microcontroller. It's a practical way to learn about IoT (Internet of Things) and web-based control.

What's an ESP32 Web Server?

A web server is a computer or a device that hosts websites and responds to web requests. The ESP32, equipped with built-in WiFi capabilities, can function as a web server, serving web pages and responding to requests from client devices. This enables users to interact with ESP32-based projects through a web browser on their computer or mobile phone.

What You'll Need

To get started, you'll need a few things:

• ESP32 Development Board
• LED Lights (you can use 2x 5mm LEDs)
• Breadboard
• Jumper Wires
• USB Cable for programming
• Computer for coding
• Resistor (to protect the LEDs)

Wiring up the Circuit

Connect the LEDs to GPIO pins 12 and 14 on the ESP32. Use a 220-ohm resistor to connect each LED's positive leg to the respective GPIO pin, and connect the negative leg to ground (GND) on the ESP32.

Setting Up the ESP32

Install the ESP32 board in the Arduino IDE.

Copy the code provided into the Arduino IDE.

Replace the placeholders in the code with your WiFi network's name (SSID) and password.

Upload the code to the ESP32 board.

Understanding the Code

The code configures the ESP32 to act as a web server. It handles requests from devices on the same network and controls the LEDs accordingly. The web page it serves has buttons that let you turn the LEDs on or off.

Find code here: ESP32 Webserver Code

Accessing the Web Interface

Once you've uploaded the code and connected the ESP32 to your WiFi network, open a web browser on any device connected to the same network. Enter the IP address of the ESP32 in the address bar, and you'll see the web interface. Clicking the buttons on the page will turn the LEDs on and off.

Making an ESP32 LED web server is a cool way to learn about IoT and web development. With just a few components and some simple coding, you can create a fun project that lets you control things remotely. It's a great starting point for exploring more advanced IoT projects and getting creative with your ESP32.

Want to explore more ESP32 projects? Check out these awesome projects we've created using various microcontrollers:

• How to Build a NodeMCU Web Server and Control an LED from a Webpage
• Getting Started with Node.js and Raspberry Pi: Controlling an LED with a Node.js Web Server
• AJAX with ESP8266: Dynamic Web Page Update Without Reloading
• Connecting ESP8266 with STM32F103C8: Creating a Web Server
• ESP8266 Interfacing with ARM7-LPC2148: Creating a Web Server to Control an LED