XTX XTSD04GLGEAG SD Card Interface

electronics Open Source PCB

A complete solution for interfacing the XTX XTSD04GLGEAG SD card chip with Arduino using SPI communication. This project includes PCB design files, Arduino code with a user-friendly serial interface, and comprehensive documentation.

Project Banner

• Direct PCB Integration: Chip can be soldered directly to your PCB
• Arduino-Compatible: Works with any Arduino board with SPI
• User-Friendly Interface: Serial menu for file operations
• Plug & Play: No drivers needed - works like standard SD cards
• Compact Design: Breakout board for easy prototyping

• XTX XTSD04GLGEAG chip
• Arduino board (Uno, Nano, Mega, etc.)
• Custom PCB (files included) Click Here to check
• SD card reader (for initial testing)

• /Arduino - Complete Arduino sketch with serial interface
• /PCB - Gerber files, schematic, and BOM for breakout board
• /Documentation - Wiring diagrams and assembly guide

1. Order PCB: Use Gerber files in /PCB/GERBER/ Order here
2. Assemble: Solder XTSD chip and SIL connectors
3. Wire to Arduino: Follow wiring diagram in Documentation/
4. Upload Code: Use Arduino IDE with SdFat library
5. Test: Open Serial Monitor (9600 baud)

• File creation, reading, writing, deletion
• File listing with sizes
• SD card information display
• Automatic reconnection with retry logic
• User-friendly serial menu system

Watch the complete build and demo on YouTube: Full tutorial

Feel free to fork, modify, and submit pull requests. Issues and feature requests are welcome!

MIT License - see LICENSE file for details

• XTX for the XTSD04GLGEAG chip
• Bill Greiman for the SdFat Arduino library
• JLCPCB for reliable PCB fabrication services
• Altium for providing professional PCB design tools