This is an evaluation board for the ADXL345 three-axis accelerometer. The ADXL345 is an awesome little accelerometer, capable of measuring acceleration of up to ±16g at up to 13-bit resolution. The evaluation board includes everything you'll need to adjust the ADXL345's settings, and monitor and log its outputs. The on-board ATmega328 takes care of all the I2C/SPI communication with the ADXL345, and it will also log the x-, y-, and z-axis acceleration values onto a uSD card. The board includes a USB interface, which allows you to read/write any of the ADXL345's registers using a terminal emulator. The default baud rate is 57600bps (8-N-1). The UART pins are also broken out allowing a direct TTL interface with the processor. Power can be supplied by 2xAA batteries, or with a 3.0-3.3VDC power supply at the VCC/GND pins. The ADXL345 evaluation board does not include batteries, uSD card or a USB cable, check the related items section below for these products. Project description, more information and ordering can be found at https://www.sparkfun.com/products/9364 Source Code: http://www.sparkfun.com/Code/ADXL345_Eval_v16.zip User Guide: http://www.sparkfun.com/datasheets/Sensors/Accelerometer/ADXLEvalBoard%20User_Guide2009-09-14.pdf