ADXL345 3 Axis Accelerometer Module SPI/I2C Bus GY-291

1. Supply Voltage: 3.3 V/ 5V.
2. Interface Type: I²C, SPI.
3. Sensing Range: ±2g, ±4g, ±8g, ±16g.
4. Sensitivity:
   • X: 28.6 LSB/g.
   • Y: 31.2 LSB/g.
   • Z: 34.5 LSB/g.
5. Ultra Low Power: 40µA in measurement mode, 0.1µA in standby@ 2.5V.
6. Free-Fall Detection.
7. Tap/Double Tap Detection.

ADXL345 Tripple Axis Accelerometer Board is a small, thin, low-power, 3-axis accelerometer with a high resolution (13-bit) measurement at up to ±16g. Digital output data is format as a 16-bit two’s complement and is accessible through either an SPI (3- or 4-wire) or I²C digital interface.

The ADXL345 Tripple Axis Accelerometer Board is well suited for mobile device applications. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes less than 1.0°.

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.

Applications :

1. Pointing devices.
2. Handsets.
3. Medical Instrumentation.
4. Gaming.
5. Industrial instrumentation.
6. Personal navigation devices.
7. Hard disk drive (HDD) protection.
8. Fitness equipment.
9. defense and aerospace.

Features :

1. Ultra-Low Power: 40µA in measurement mode, 0.1µA in standby@ 2.5V.
2. Free-Fall Detection.
3. Tap/Double Tap Detection.
4. Flexible interrupt modes mappable to either interrupt pin Measurement ranges selectable via serial command Bandwidth selectable via serial command
5. Wide temperature range (−40°C to +85°C).
6. 10,000 g shock survival.
7. Support 5V/3.3V voltage input, onboard RT9161 power chip, lower pressure drop faster than 1117, the faster load speed of response, very suitable for high-noise power supply environment.
8. User-selectable resolution
   1. Fixed 10-bit resolution.
   2. Full resolution, where resolution increases with G range, up to 13-bit resolution at ±16 g (maintaining 4 mg/LSB scale factor in all G ranges).