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It has connections for a Lithium Polymer battery and includes a charge circuit over USB
You will need to supply your own headers to connect this board to a breadboard
JST connector
Scorekeepers and lap timers would be a great application for large 7-segment LED displays
SparkFun OpenLog Arduino, Other Infrared It has connections for aThe SparkFun OpenLog 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. The SparkFun OpenLog runs off of an onboard ATmega328, running at 16MHz thanks to the onboard crystal. The OpenLog draws 6mA when