SPECIFICATIONS

Model: GY-291
Chip used: ADXL345
Power supply: 3-5v
Communication method: IIC/SPI communication protocol
Measuring range: ±2g±16g
Provide schematic diagrams, related data sheets and reference documents
Provide 51, AVR, Arduino microcontroller test code
3 axes, ± 2g/ ± 4g/ ± 8g/ ± 16g
Digital Acceleration Module

Overview

The ADXL345 is a small, thin, low-power triaxial accelerometer that can
Acceleration up to ±16 g for high-resolution (13-bit) measurements. Number of digital outputs
data is in 16-bit two's complement format,
Accessible via SPI (3-wire or 4-wire) or I2C digital interface.

The ADXL345 is ideal for mobile device applications. It can be used in tilt detection applications
Measure static acceleration due to gravity, but also dynamic acceleration due to motion or shock
speed. It has high resolution (4 mg/LSB) and is capable of measuring inclinations of about 0.25°
angle change. Using a digital output accelerometer such as the ADXL345 eliminates the need for
analog-to-digital conversion, which saves system cost and board area. also,

The ADXL345 is a small, thin, ultra-low power 3-axis accelerometer with high resolution
High (13 digits), measuring range up to ± 16g. Digital output data is 16-bit binary
Complement format, accessible via SPI (3-wire or 4-wire) or I2C digital interface.
The ADXL345 is ideal for mobile device applications. It can be used in tilt detection applications
It measures the static acceleration of gravity in the
state acceleration. With its high resolution (3.9mg/LSB), it can measure less than 1.0°
The tilt angle changes.
The device offers several special detection functions. Activity and inactivity detection function through
Detects movement by comparing acceleration on any axis with user-set thresholds
movement occurs. The tap detection function can detect single and double vibrations in any direction
do. Free fall detection can detect if the device is falling. These
Functions can be independently mapped to one of two interrupt output pins. Applying
The patented integrated memory management system uses a 32-level FIFO
(FIFO) buffers that can be used to store data, thereby loading the host processor
to a minimum and reduce overall system power consumption.
Low-power modes support intelligent motion-based power management, resulting in extremely low
Power consumption for threshold sensing and motion acceleration measurements.
ADXL345 in 3 mm × 5 mm × 1 mm, 14-pin small, ultra-thin plastic
package.