Accel2 click

Accel 2 click carries ST's LIS3DSH IC, a low-power factory-calibrated three-axis accelerometer which embeds a FIFO buffer and two programmable state machines. It allows you to implement gesture recognition. User-defined programs can distinguish movement patterns like shake and double shake, face up and face down, turn and double turn, and activate an interrupt upon their execution. You can also switch between I2C and SPI interfaces for communicating with the target board MCU (by soldering the onboard jumpers in the appropriate positions). Accel 2 click is designed to use a 3.3V power supply only.

LIS3DSH three-axis accelerometer
Selectable communication interface (I2C or SPI)
FIFO buffer and embedded state machines
3.3V power supply