Project Overview

The ESP8266 NodeMCU 4-Channel Relay Module project is an innovative, simple, and cost-effective solution for controlling multiple home appliances remotely via Wi-Fi. Using the ESP8266 NodeMCU development board, this system allows you to control up to four appliances such as lights, fans, or any other device connected to the 4-Channel Relay Module. Through a web interface, users can control the state (on/off) of each relay, enabling smart home automation and remote management of electrical devices.

This project is designed to be an easy introduction to Internet of Things (IoT) applications. With Wi-Fi connectivity, the ESP8266 NodeMCU allows remote control of devices over the local network, making this project ideal for home automation, DIY enthusiasts, and anyone interested in creating their own smart home systems.

Problem It Solves

In traditional homes, manually turning appliances on and off can be a hassle. This system automates the process of controlling multiple appliances, providing:

• Remote Control: Appliances can be controlled from any device on the same network.

• Energy Efficiency: Allows users to turn off devices remotely when not needed, helping save energy.

• Convenience: Control appliances with a simple web interface, no need for physical switches.

Features

1. 4-Channel Relay Control:

   • Allows you to control up to four appliances using relays.

   • Each relay can be connected to devices like lights, fans, or any electrical device that can be switched on/off.

2. Wi-Fi Connectivity:

   • The ESP8266 NodeMCU connects to your home Wi-Fi network, enabling you to control devices remotely from any device connected to the same network (such as your phone, tablet, or computer).

3. Web Interface:

   • An easy-to-use web page lets you control each of the four relays. When you connect to the ESP8266, the system hosts a simple webpage with control buttons for each relay.

4. Real-Time Device Control:

   • Turn devices on and off in real-time using the web interface. Each device's status is updated immediately on the page.

5. Low-Cost, Easy to Build:

   • With the ESP8266 NodeMCU and the 4-Channel Relay Module, this project offers a low-cost, accessible home automation solution for beginners.

6. Simple Hardware Setup:

   • The project uses common, easily available components that can be easily assembled with basic soldering and wiring skills.

Components Used