ESP32-S3 OBS Studio Touch Controller

A complete real-time OBS Studio control and PC hardware monitoring system using a 5-inch touchscreen LCD on ESP32-S3.

This project combines a modern LVGL-based touchscreen interface on the ESP32-S3 + Waveshare 5B LCD with a powerful Windows application to give you full control of OBS Studio and live monitoring of your PC's hardware (CPU, GPU, temperatures, battery, audio, etc.).

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✨ Features

ESP32 Touchscreen Interface

• Full OBS Studio control: Start Recording, Pause/Resume, Stop
• Real-time Volume Slider with live feedback
• Real-time Screen Brightness Slider
• CPU & GPU usage meters with animated needle gauges
• Live CPU & GPU Temperature Chart
• Battery level indicator
• Status LED indicator (Recording = Red, Paused = Orange, Idle = Off)
• Beautiful, smooth LVGL v8 user interface with custom font and background image

Windows PC Application

• Full OBS WebSocket integration
• Real-time hardware monitoring via LibreHardwareMonitor
• System audio control via NAudio
• Stable high-speed UART communication with ESP32
• Automatic synchronization of OBS state between PC and ESP32

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🛠️ Hardware Requirements

• ESP32-S3 Development Board (recommended: Waveshare ESP32-S3-Touch-LCD-5B)
• 5" RGB LCD Panel (1024×600 resolution)
• GT911 Touch Controller
• CH422G IO Expander (used for backlight control and LCD reset)
• USB-to-UART connection between PC and ESP32

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📦 Software Requirements

ESP32 Side

• Arduino IDE or PlatformIO
• ESP32 Arduino Core
• Required Libraries:
  • ESP32_Display_Panel
  • lvgl (Version 8)
  • Custom lvgl_v8_port

Windows PC Side

• .NET 8.0 or .NET 10.0 Windows
• Visual Studio 2022 (recommended)
• NuGet Packages:
  • LibreHardwareMonitorLib
  • NAudio
  • obs-websocket-dotnet

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📡 Communication Protocol (UART)

The ESP32 and PC communicate over 115200 baud UART using a custom 29-byte packet protocol.

PC → ESP32 (Main Status Packet)

SES:PAR:CPU:GPU:CTP:GTP:PIL:K\n