Intelligent Volume Control with ESP32

IoT DIY project developed by baron.be

Complete demonstration of the volume control system

Project Overview

This project demonstrates the creative use of modern technologies to create an intelligent volume control system. By combining an ESP32, servo motors, and a real-time web interface via WebSocket, we have developed a solution for controlling audio system volume with presence detection and automation.

Key Features

WebSocket Innovation

Bidirectional real-time communication between web interface and ESP32 for instant control.

Intelligent Automation

Automatic volume adjustment based on presence and configurable schedules.

Multi-control

Control via web interface, IR remote, or presence detection.

Development Process

Electronic Architecture

Main components:

  • ESP32 WROOM DA module for control
  • Servo motors for volume and mix (L298N and L9110)
  • PIR sensor for presence detection
  • IR receiver for Panasonic/NEC remotes
Electronic schematic of the volume control system

WebSocket Development

Real-time communication implementation:

  • WebSocket server on port 81
  • Volume and mix event management
  • Responsive web interface
  • Parameter storage in EEPROM
Electronic schematic of the volume control system

3D Modeling

Case and support design:

  • Ventilate