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ESP32

ESP32BeginnerAdvancedesp32websocketreal-time

ESP32 WebSocket Server

An ESP32-based WebSocket server enabling real-time, bidirectional communication with web browsers and IoT clients for live dashboards and control.

₹3450.00

Inclusive of all taxes

Development fee₹1768.00

Components (from library)₹1682.00

Total per unit (incl. GST)₹3450.00

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Quantity:

Total: ₹3450.00

₹3450.00

Inclusive of all taxes

Components

5 items

Difficulty

Advanced

Build Time

2-3 hours

Project Details

The ESP32 WebSocket Server allows real-time communication between the ESP32 and connected web clients. Unlike HTTP, WebSockets maintain a persistent connection, enabling instant data updates and live device control. Perfect for live sensor dashboards, real-time control panels, multiplayer IoT interactions, and fast automation systems. The project demonstrates ultra-low latency, bi-directional communication, browser compatibility, and scalable IoT design.

How It Works

The ESP32 creates a WebSocket server on port 81. Clients connect via a web browser using the WebSocket protocol. Once connected, a persistent bidirectional channel is established. The ESP32 can send data instantly to clients, and clients can send control commands back. The example code handles text messages like 'ON' and 'OFF' to control an LED on GPIO 2.

Prerequisites

Basic knowledge of Arduino programming, understanding of WiFi networking concepts, familiarity with HTML/JavaScript for client-side code, and experience with ESP32 development environment setup.

What You'll Learn

WebSocket protocol

Understanding WebSocket communication fundamentals

Real-time communication

Implementing low-latency data exchange

ESP32 networking

Setting up WiFi and server on ESP32

Event-driven programming

Handling client events and responses

Frontend-IoT interaction

Connecting web clients to IoT devices

Key Features

✓

Ultra-low latency

Minimal delay for real-time data transmission

✓

Bi-directional communication

Simultaneous data flow from server to client and vice versa

✓

Browser-compatible

Works with standard web browsers without plugins

✓

Scalable IoT design

Architecture supports multiple clients and devices

Pin Connections

MCU Pin	Connected To	Purpose	Notes
GPIO 2	LED (+) via resistor	Digital output for LED control	Optional for visual feedback
GND	LED (-)	Ground connection for LED	Optional for visual feedback

Tools Required

Arduino IDE

USB Cable

Web Browser

Safety Precautions

Electrical

⚠Ensure proper power supply to ESP32
⚠Avoid short circuits on GPIO pins

Operating

⚠Use local network only for security
⚠Add authentication for production use
⚠Prefer WSS (Secure WebSocket) over WS

General

⚠Firewall port protection may be needed
⚠Test on isolated network first

Frequently Asked Questions

Q:Can multiple clients connect?

A: Yes, WebSocket supports multiple clients simultaneously.

Q:Can sensor data be streamed?

A: Yes, in real time. You can modify the code to send sensor readings.

Q:Does this work with Home Assistant?

A: Yes, via custom integration or MQTT bridge.

#esp32#websocket#real-time#iot#web-server

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Back to Projects

Component	Part ID	Qty	Price	Description
ESP32 Development Board	-	1	₹1682.00	-
Wi-Fi Network	-	1	₹0.00	-
PC / Smartphone	-	1	₹0.00	-
LED (optional)	-	1	₹0.00	-
Resistor (for LED)	-	1	₹0.00	-