ADXL345 Tripple Axis Accelerometer Board By ADIY

This a small, thin, low-power, 3-axis accelerometer with a high resolution up to 13-bit measurement at up to 16g. Digital output data is formatted as a 16-bit two’s complement and is accessible through either an SPI or I2C digital interface.

Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and if the acceleration on any axis exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can be mapped to one of two interrupt output pins. An integrated, patent-pending 32-level first-in, first-out (FIFO) buffer can be used to store data to minimize host processor intervention.

Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.