The ADXL345 is a 3-axis accelerometer module that measures acceleration along the X, Y, and Z axes. It is a small, low-power device that can be used to sense motion and orientation in a variety of applications. The module typically includes the ADXL345 accelerometer chip, as well as supporting circuitry such as a voltage regulator and level shifting circuitry. It communicates with a microcontroller or other control device using a serial communication protocol, such as I2C or SPI. The ADXL345 is often used in projects that require the measurement of acceleration, such as wearable devices, robotics, and motion-controlled games. It is also commonly used in conjunction with other sensors, such as gyroscopes, to provide a more complete picture of an object's orientation and movement.

The ADXL345 chip is cap-based Accelerometer sensor.

The Accelerometer measures total acceleration on an object, including the static acceleration from gravity it would experience even when its not moving.

It can be used to easily be used to detect gravity strength, acceleration or the title (angle) of the object the module is attached to.

This module provides information on all 3 Dimensions, or 3-Axis, of Space at a single point in time.

Example code can be found here: http://www.himix.lt/arduino/arduino-and-servo-control-using-accelerometer-adxl345/