What is it?

The Xadow SD board allows use of upto 32GB SDHC cards and is compatible with the SDFat and SD libraries. The Xadow SD can be powered by 3.3V. And it is compatible with Xadow system.

Why did you make it?

The pre-existing Xadow - Storage module offer only 64K of storage in EEPROM, an opportunity to make something new.

SD card shields are easily available in the standard arduino ecosystem, but none exists for the FFC cable based Xadow form factor. So I took an SD shield design and shrunk it down to the Xadow size. It is now available on the Seeed Wiki as Xadow - SD component.

What makes it special?

• Work Voltage: 3.3V
• Control Mode: SPI
• Level Converter: 74HC4050D
• Chip Select using A5
• Dimensions: 25.43mm x 20.35mm
• Breadboard compatible breakout to use as a standalone SD module