Custom Driver & UI for Chinese Mini Keyboard

Created a custom driver and configuration UI for a Chinese mini keyboard that lacked proper software support, making it fully functional and customizable.

The SayoDevice 02C is a popular budget mini keyboard from China that ships with:

• No English documentation
• Buggy proprietary software
• Limited customization options
• Compatibility issues

I reverse-engineered the device protocol and created:

• Custom driver for Windows/Linux
• User-friendly configuration UI
• Macro programming support
• RGB lighting control

• ⌨️ Key Remapping

  • Any key to any function
  • Multi-key combinations
  • Layer support
  • Media controls

• 🎨 RGB Control

  • Custom lighting effects
  • Per-key RGB
  • Animation speeds
  • Brightness control

• 🎯 Macro System

  • Record macros
  • Timing control
  • Complex sequences
  • Game profiles

• 💾 Profile Management

  • Save/load profiles
  • Import/export
  • Cloud sync
  • Auto-switching

• Languages: C++, Python
• UI Framework: Qt/PyQt
• Protocol: USB HID
• Reverse Engineering: Wireshark, USB analysis
• Platform: Windows, Linux

1. Protocol Analysis

   • Captured USB packets
   • Decoded communication protocol
   • Identified command structure

2. Driver Development

   • Implemented USB HID communication
   • Created command library
   • Built abstraction layer

3. UI Design

   • User-friendly interface
   • Real-time preview
   • Drag-and-drop configuration

• 1000+ downloads on GitHub
• Featured in mechanical keyboard communities
• Requests for support of other devices
• Inspired similar projects

• Made unusable hardware fully functional
• Saved users from buying expensive alternatives
• Created better software than original manufacturer
• Open-sourced for community benefit

• Windows 10/11
• Linux (Ubuntu, Arch, Fedora)
• Full RGB spectrum
• 50+ macro slots
• Unlimited profiles
• No internet required

The project is open source and accepts contributions:

• Bug fixes
• New features
• Device support
• Translations

Get the driver and UI: github.com/Avzolem/MiniKeyboard-SayoDevice-02C-Config

• macOS support
• Mobile app
• More device models
• AI-powered layouts