Triple Axis Accelerometer Breakout - LIS3DH
The LIS3DH Breakout is a smart, low-power, three-axis, capacitive micro-machined accelerometer with 12 bits of resolution that you can use to add translation detection to your project. The LIS3DH provided on this breakout features ±2g/±4g/±8g/±16g Dynamically Selectable Fullscale, and it has some built-in movement detection abilities. The LIS3DH is easy to set up; just wire up your choice of interface (SPI or I2C), supply 3.3V, and ground.
More information is available on the website of Sparkfun.