The ESP32 Wi-Fi Controlled Street Light System is an exciting IoT project that demonstrates how wireless technology can be used to control lighting systems remotely. In this project, an ESP32 microcontroller hosts a simple web server that allows users to turn LEDs ON and OFF through a web browser. This project introduces beginners to important IoT concepts such as Wi-Fi connectivity, embedded web servers, and remote device control.
Introduction
With the rapid growth of the Internet of Things (IoT), smart lighting systems have become increasingly popular. This project uses the ESP32 microcontroller, which comes with built-in Wi-Fi capabilities, to create a simple street light simulation. Users can access a web page hosted on the ESP32 and control LEDs from any device connected to the same Wi-Fi network.
The project is easy to build and serves as an excellent introduction to wireless automation and smart home technologies.
Components Required
ESP32 microcontroller board featuring built-in Wi-Fi connectivity for remote LED control and IoT applications.
ESP32 microcontroller board featuring built-in Wi-Fi connectivity for remote LED control and IoT applications.
Jumper wires establish electrical connections between the ESP32, LEDs, and breadboard components.
To build this project, you will need the following components:
Table of Contents
Working Principle
The ESP32 connects to a Wi-Fi network using predefined SSID and password credentials. Once connected, it starts a web server and obtains an IP address from the network.
When a user enters this IP address into a web browser, a simple control interface appears with ON and OFF buttons. Clicking these buttons sends commands to the ESP32:
- Value 1 turns the LED ON.
- Value 0 turns the LED OFF.
The ESP32 processes these commands and changes the state of the connected LED in real time.
Circuit Connections of ESP32 Wi-Fi Controlled Street Light System
Arduino IDE used to write, upload, and monitor the ESP32 code for wireless LED control.
Circuit diagram showing LED connection to ESP32 GPIO pin through a protective resistor.
Simple web server interface allowing users to remotely switch LEDs ON and OFF through Wi-Fi.
Follow these wiring steps:
- Connect the positive terminal of the LED to a resistor.
- Connect the resistor to GPIO Pin 2 of the ESP32.
- Connect the negative terminal of the LED to the ESP32 GND pin.
- Repeat similar connections for additional LEDs if required.
- Connect the ESP32 to the computer using a USB cable.
The resistor protects the LED by limiting the current flowing through it.
Programming the ESP32 Wi-Fi Controlled Street Light System
The project is programmed using Arduino IDE.
The code includes:
- Wi-Fi library for ESP32 connectivity.
- Network credentials (SSID and Password).
- Web server functionality.
- LED control logic.
- Browser-based interface for switching LEDs ON and OFF.
After entering the Wi-Fi credentials, select the correct ESP32 board and COM port in Arduino IDE before uploading the code.
Uploading the Program of ESP32 Wi-Fi Controlled Street Light System
- Connect the ESP32 via USB.
- Open Arduino IDE.
- Verify the code.
- Click Upload.
- Press the BOOT button if required during uploading.
- Wait until the upload is completed successfully.
Once uploaded, open the Serial Monitor.
Connecting to Wi-Fi
Enable a Wi-Fi hotspot or use an existing Wi-Fi network that matches the credentials entered in the code.
After connection, the Serial Monitor will display the IP address assigned to the ESP32.
Example:
WiFi Connected
IP Address: 192.168.1.xxxThis IP address is used to access the ESP32 web server.
Controlling the LEDs
Open a web browser on a smartphone, tablet, or computer connected to the same network.
Enter the ESP32 IP address in the address bar.
A simple web page appears containing:
- LED ON Button
- LED OFF Button
Pressing ON illuminates the LED, while pressing OFF switches it off instantly.
This demonstrates real-time communication between the browser and the ESP32.
Applications
This project can be expanded for various practical applications:
- Smart Street Lighting
- Home Automation Systems
- Wireless Appliance Control
- Smart Garden Lighting
- Industrial Monitoring Systems
- IoT Learning Projects
Advantages of Using ESP32 Wi-Fi Controlled Street Light System
- Built-in Wi-Fi and Bluetooth
- Low Power Consumption
- Cost Effective
- Easy Programming with Arduino IDE
- Suitable for IoT Applications
- Multiple GPIO Pins for Expansion
Learning Outcomes
By completing this project, students learn:
- ESP32 Programming
- Arduino IDE Usage
- Wi-Fi Networking Basics
- Web Server Development
- GPIO Control
- IoT Fundamentals
- Hardware Interfacing
Why Learn with RoboSiddhi?
At RoboSiddhi, we are committed to making STEM education, robotics, coding, electronics, and IoT learning simple and practical for students of all ages.
Our project-based learning approach helps students understand real-world applications of technology through hands-on activities and guided tutorials.
What RoboSiddhi Offers
- Robotics and STEM Projects
- Arduino and ESP32 Tutorials
- IoT and Home Automation Projects
- Coding and Programming Courses
- AI and Machine Learning Basics
- DIY Electronics Experiments
- Educational Kits for Students
Benefits of Learning with RoboSiddhi
- Beginner-Friendly Explanations
- Practical Hands-On Learning
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Whether you are a student, teacher, parent, or technology enthusiast, RoboSiddhi provides engaging educational content that helps transform ideas into innovative projects.
Visit www.robosiddhi.com to explore more STEM activities, robotics projects, and learning resources.
YouTube Tutorial
For a complete step-by-step demonstration of the ESP32 Wi-Fi Controlled Street Light System, watch our detailed video tutorial. The tutorial covers hardware connections, Arduino IDE programming, Wi-Fi setup, code uploading, and real-time LED control through a web browser.
In this video, you will learn:
- How to connect LEDs and resistors with ESP32
- Setting up Arduino IDE for ESP32 programming
- Configuring Wi-Fi credentials
- Uploading code to the ESP32 board
- Finding the ESP32 IP address using Serial Monitor
- Creating a simple web interface for LED control
- Testing wireless LED operation in real time
The tutorial is designed for beginners, students, and IoT enthusiasts who want hands-on experience with ESP32-based automation projects.
Watch the complete tutorial here:
Conclusion
The ESP32 Wi-Fi Controlled Street Light System is an excellent beginner-friendly IoT project that combines programming, networking, and electronics. By hosting a web server on the ESP32, users can remotely control LEDs through a web browser, demonstrating the core principles behind smart lighting and home automation systems. This project provides a strong foundation for developing more advanced IoT applications such as smart homes, wireless monitoring systems, and intelligent city infrastructure.