SparkFun OpenLog with Headers

Description
The SparkFun OpenLog with Headers is an open source data logger that works over a simple serial connection and supports microSD cards up to 64GB. The OpenLog can store or "log" huge amounts of serial data and act as a black box of sorts to store all the serial data that your project generates， for scientific or debugging purposes. This version of th OpenLog even includes pre-soldered headers for your convenience.
The SparkFun OpenLog uses an ATmega328 running at 16MHz thanks to the onboard resonator. The OpenLog draws approximately 2-3mA in idle(nothing to record)mode. During a full record OpenLog can draw 10 to 20mA depending on the microSD card being used.
All data logged by the OpenLog is stored on the microSD card. Any 512MB to 32GB microSD card should work. OpenLog supports both FAT16 and FAT32 SD formats.
For even better performance the OpenLog Artemis is the tool you need， featuring logging speeds up to 500000bps.
Get Started with the SparkFun OpenLog Guide
Features
VCC Input：3.3V-12V(Recommended 3.3V-5V)
Log to low-cost microSD FAT16/32 cards up to 32GB
Simple command interface
Configurable baud rates(up to 115200bps)
Preprogrammed ATmega328 and bootloader
Four SPI pogo pins
Two LEDs indicate writing status
2mA idle， 6mA at maximum recording rate
Pre-soldered Headers