Product Details ＋

ADXL345 Tripple Axis Digigal Accelerometer Board

The ADXL345 Triple Axis Accelerometer Board is a compact, low-power 3-axis accelerometer that offers high-resolution measurements (13-bit) of up to ±16g. The digital output data is formatted as 16-bit two’s complement and can be accessed via either an SPI (3- or 4-wire) or I2C digital interface.

This accelerometer is ideal for mobile device applications, measuring both static acceleration from gravity in tilt-sensing applications and dynamic acceleration due to motion or shock. Its high resolution (4 mg/LSB) allows for the detection of inclination changes as small as 1.0°.

The board includes several special sensing features: activity and inactivity sensing can detect motion presence or absence based on user-defined acceleration thresholds. Tap sensing recognizes single and double taps, while free-fall sensing detects when the device is falling. These functions can be linked to one of two interrupt output pins. Additionally, it features an integrated, patent-pending 32-level FIFO buffer for data storage, reducing the need for host processor intervention.

Low power modes facilitate intelligent motion-based power management, enabling threshold sensing and active acceleration measurement with minimal power consumption.

Note: This package does not include the Arduino board, you have to buy it separately.

Technical Details

Input Supply Voltage: 3.3V ~ 5V
Interface Type: I²C, SPI
Sensing Range: ±2g, ±4g, ±8g, ±16g
X-Axis Sensitivity: 28.6 LSB/g
Y-Axis Sensitivity: 31.2 LSB/g
Z-Axis Sensitivity: 34.5 LSB/g
Length: 20.5mm
Width: 15.5mm
Height: 3.5mm
Weight: 0.6g

Features

Ultra-Low Power: 40µA (measurement mode), 0.1µA (standby at 2.5V)
Free-Fall Detection
Tap/Double Tap Detection
Flexible interrupt modes, mappable to interrupt pin
Measurement and bandwidth selectable via serial command
Wide temperature range: −40°C to 85°C
10,000 g shock survival
Supports 5V/3.3V input, RT9161 power chip for fast response
User-selectable resolution
Fixed 10-bit resolution, up to 13-bit at ±16g

Application:

Motion Detection: Detects movement in mobile devices, laptops, and gaming controllers.
Gesture Recognition: Enables gesture-based input in wearable devices and remote controls.
Orientation Sensing: Used in smartphones and tablets for screen rotation.
Fitness and Wearables: Tracks activity and motion in fitness trackers and smartwatches.
Industrial Monitoring: Monitors vibrations and motion in machinery and equipment.
Vehicle Stability Control: Detects tilts and vibrations in automotive systems for stability enhancement.
Robotics: Provides orientation and motion feedback for robot navigation and control.
Drones and UAVs: Assists with stability and navigation in unmanned aerial vehicles.
Gaming: Enhances motion sensing in gaming controllers for immersive gameplay.
Navigation Systems: Used in GPS devices for dead reckoning and motion tracking.
Medical Devices: Measures motion and orientation in diagnostic and therapeutic equipment.
Hard Drive Protection: Protects HDDs by detecting shocks and sudden movements.