GY-291 ADXL345 Digital 3-Axis Gravity Acceleration Inclination Module IIC/SPI TransmissionItem NO.: GY-291 ADXL345

GY-291 ADXL345 Digital 3-Axis Gravity Acceleration Module

Product Overview:

The ADXL345 is a small, slim, low-power three-axis accelerometer that can measure acceleration up to ± 16 g with high resolution (13 bits). The digital output data is in 16 bit binary complement format and can be accessed through SPI (3-wire or 4-wire) or I2C digital interface.

The ADXL345 is ideal for mobile device applications. It can be used to measure static gravity acceleration in tilt detection applications, as well as dynamic acceleration caused by motion or impact. It has a high resolution (4 mg/LSB) and can measure the dip angle change of about 0.25 °. The use of digital output accelerometers such as ADXL345 eliminates the need for analog-to-digital conversion, thus saving system costs and circuit board area.

In addition, the ADXL345 is a small and thin power consumption 3-axis accelerometer with high resolution (13 bits) and a measurement range of ± 16g. The digital output data is in 16 bit binary complement format and can be accessed through SPI (3-wire or 4-wire) or I2C digital interface. The ADXL345 is ideal for mobile device applications. It can be used to measure static gravity acceleration in tilt detection applications, as well as dynamic acceleration caused by motion or impact. It has high resolution (3.9mg/LSB) and can measure tilt angle change less than 1.0 °.

The device provides a variety of special detection functions. The active and inactive detection functions detect whether there is movement by comparing the acceleration on any axis with the threshold set by the user. The knock detection function can detect single vibration and double vibration in any direction. The free fall detection function can detect whether the device is falling. These functions can be independently mapped to one of the two interrupt output pins. The patent pending integrated memory management system uses a 32 level first in first out (FIFO) buffer, which can be used to store data, thus reducing the host processor load and reducing the overall system power consumption. Low power consumption mode supports intelligent power management based on motion, so as to conduct threshold sensing and motion acceleration measurement with low power consumption. 3 mm for ADXL345 ×  5 mm  ×  1 mm, 14 pin small plastic package.

Product Parameters:

● Name: ADXL345 module (three-axis gravity acceleration)

● Model: GY-291

● Chip used: ADXL345

● Power supply: 3-5 v

● Communication mode: IIC/SPI communication protocol

● Measuring range: ± 2g ± 16g

Application Field:

1. Instrumentation

2. Battery powered system

3. Process control

4. Medical instruments

5. Games and pointing devices

6. Personal navigation equipment

7. Hard drive protection