Acceleration Sensor ADXL345 GY-291

The ADXL345 (GY-291) is a small, thin, low-power 3-axis acceleration sensor on a module with two mounting holes. It is suitable for static applications such as measuring the acceleration of gravity (tilt) and for dynamic acceleration, motion or shock. The measurement data is transmitted digitally via SPI (3- or 4-wire) or I2C. Its low power consumption makes the sensor a good fit for mobile devices.

Recommended alternative for Klipper: Fermion ADXL345 Digital Triaxial Accelerometer

Recommended Accessories:

Features:

Adjustable measurement range: ±2 g, ±4 g, ±8 g or ±16 g
13-bit resolution at ±16 g
High resolution of 4 mg/LSB: measures tilt changes of less than 1 degree
Activity measurement: motion present, adjustable via a threshold
Inactivity measurement: no motion present
Single and double tap detection
Free-fall detection
Sensor functions can be individually assigned to one of two interrupt outputs
Voltage regulator on the module, therefore 3-5 V supply
No level shifter on the data lines: the chip is designed for a maximum of 3.6 V, a level converter is recommended on 5 V boards

Application Examples:

Measuring tilt and tilt changes
Detecting motion, shock and tapping
Free-fall detection, for example evaluated via an interrupt of the Arduino board
Mobile devices with low power consumption