The AK-SDFS-UART-B board allows you to read/write data from/to an SD card using a serial TTL port (UART). The board supports the FAT file system so the files can be read back from the SD on a PC/MAC.

Using a simple protocol (libraries included) you can read/write 4 files concurrently, in text or binary mode. Using only four wires (TX, RX, VCC and GND) you can read and write from the SD using very small microprocessors, even 8-bit ones. The baudrate can be adjusted from 9600 up to 460800 bps.

We have prepared a library that encapsulates the communication protocol and the source code can be downloaded. There is also an Arduino sketch demonstration available for download.

The AK-SDFS-UART-B is perfect to be used as a data logger, for sensors and debug information. It supports SD and SDHC cards.

We also have a micro SD version of this board.

Features

• Only four wires to get a working FAT File System
• Powered from 3.3V external supply
• All I/O pins are 5V tolerant
• Operates on 4 files concurrently
• RTC supported (time and date command has to be given at every power up)
• Supports all file commands as Open, Create, Exist, Close, Write, Flush, Read, Size
• Supports long file names
• Supports directory tree listing
• Commands to create and delete directories
• Supports binary files
• Uses a single and secure UART protocol. Source code examples are provided
• Breadboard-ready
• Supports firmware upgrade

Documents

• User manual

Software

• Protocol library
• Arduino library
• Arduino example sketch