How Do I Create a NodeMCU Web Server?


Heather Bennett

Creating a NodeMCU web server is an essential skill for any IoT enthusiast. In this tutorial, we will guide you through the process of setting up a web server on your NodeMCU board using HTML and the ESP8266 library. So, let’s get started!

What is NodeMCU?

NodeMCU is an open-source firmware and development board that helps you build IoT applications. It is based on the ESP8266 Wi-Fi module, which provides built-in Wi-Fi capabilities for connecting to the internet. With its small form factor and low power consumption, NodeMCU has become a popular choice for IoT projects.

Setting up the Hardware

Before we dive into programming, let’s make sure we have all the necessary hardware components:

  • NodeMCU board: This is the heart of our project.
  • USB cable: We need this to connect our NodeMCU board to the computer.

Software Requirements

To create a web server on NodeMCU, we need to install a few software:

  • Arduino IDE: This is where we will write our code.
  • ESP8266 library: We need this library to interface with the ESP8266 Wi-Fi module.

Coding the Web Server

Now that we have everything set up, let’s start coding our web server!

Step 1: Include Libraries

In your Arduino IDE, open a new sketch and include the necessary libraries:

#include <ESP8266WiFi.h>

Step 2: Set up Wi-Fi

Next, we need to connect our NodeMCU board to Wi-Fi:

const char* ssid = "YourSSID";
const char* password = "YourPassword";

Note: Replace “YourSSID” and “YourPassword” with your actual Wi-Fi credentials.

Step 3: Create the Web Server

Now, let’s create the web server object:

WiFiServer server(80);

Step 4: Initialize the Web Server

We need to initialize the web server in the setup() function:

void setup() {
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {