Features a stackable headers, a back-up battery for RTC and a reset button
Prototyping area (102 solder pads) for soldering connectors, circuitry or sensors
Works with FAT16 or FAT32 formatted cards
With onboard 3.3 V regulator to run SD cards that require a lot of power
The Data Logging Shield for Arduino is a dedicated and well-designed data logging shield for Arduino. Its SD card interface works with FAT16 or FAT32 formatted cards. The 3.3 v level shifter circuitry prevents damage to your SD card. Also, the real-time clock (RTC) keeps the time going even when the Arduino is unplugged.
The software only supports FAT, and doesn't recognize exFAT SD cards, I manage to get it datalloging with time with a old 16GB SD card, and had to load one image just to set the clock, I'm working in adding one clock display and buttons to be able to set the clock if needed as stand alone device