Voice Servo Controller

A web-based voice control system for servo motors using ESP32, Arduino, and speech recognition. Control servos with voice commands "Forward" and "Backward".

Features

• Browser-based speech recognition using Web Speech API
• Real-time servo control via WiFi
• MySQL database for command persistence
• Responsive web interface with dark theme
• Single servo control optimized for voice commands

System Architecture

Voice Input → Web Browser → PHP API → MySQL Database → ESP32 → Arduino → Servo Motor

Hardware Requirements

• ESP32 Development Board
• Arduino Uno/Nano
• Servo Motor
• Jumper wires

Software Requirements

• Web server with PHP support
• MySQL database
• Arduino IDE
• Modern web browser (Chrome, Edge, Safari)

Wiring

ESP32 Pin 25 (TX) → Arduino Pin 2 (RX) ESP32 Pin 27 (RX) → Arduino Pin 3 (TX) Arduino Pin 13 → Servo Signal Pin GND connections between all components

Installation

Database Setup

CREATE DATABASE servo_control;
USE servo_control;
CREATE TABLE directions (
    id INT AUTO_INCREMENT PRIMARY KEY,
    direction ENUM('forward', 'backward') NOT NULL,
    timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

Configuration

1. Edit db_config.php with your MySQL credentials
2. Update WiFi credentials in ESP32.ino
3. Set server IP address in ESP32.ino
4. Upload Arduino and ESP32 code
5. Deploy web files to your server

Usage

1. Open web interface in browser
2. Click microphone button
3. Say "Forward" or "Backward"
4. Servo moves to corresponding position (Forward=180°, Backward=0°)

File Structure

• index.html - Main web interface
• style.css - Interface styling
• save_direction.php - Command storage API
• direction.php - Command retrieval API
• db_config.php - Database configuration
• Arduino.ino - Servo control code
• ESP32.ino - WiFi communication code

API Endpoints

POST /save_direction.php Body: direction=forward|backward Response: {"success": true, "direction": "forward"}

GET /direction.php Response: {"success": true, "direction": "forward", "angle": 180}

Showcase

showcase.mp4