adxl345 module

🔹 ADXL345 Module – 3-Axis Digital Accelerometer (±16g)

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

✅ Specifications:

Measurement Range: ±2g, ±4g, ±8g, ±16g (user-selectable)

Resolution: Up to 13-bit (4mg/LSB scale factor)

Interface: I2C (default) and SPI (3- or 4-wire)

Supply Voltage: 3V–5V (module with onboard regulator); IC core: 1.8V–3.6V

Power Consumption: 25–130µA (typical), 40µA in measurement mode, 0.1µA standby

Built-in Functions: Tap/Double Tap Detection, Activity/Inactivity Monitoring, Free-Fall Detection

Shock Survival: 10,000 g

I2C Address: Default 0x53 (SDO LOW), 0x1D (SDO HIGH)

Dimensions: ~40×20mm (module typical)

📦 Features:
✔️ User-selectable measurement ranges (±2g to ±16g)
✔️ Digital interface supports I2C and SPI communication
✔️ Ultra-low power consumption – ideal for battery-powered applications
✔️ Built-in motion detection functions – Tap/Double Tap, Free-Fall, Activity/Inactivity
✔️ 32-level output data FIFO reduces host processor load
✔️ On-board 3.3V regulator and level shifting – compatible with 3.3V and 5V microcontrollers
✔️ Flexible interrupt pins (INT1 and INT2) – mappable to any interrupt event
✔️ High shock survivability – robust for portable applications

📦 Applications:
✔️ Screen orientation and tilt sensing in mobile devices
✔️ Gaming controllers and motion-based user interfaces
✔️ Robotics – balance, stability, and impact detection
✔️ Industrial vibration monitoring and predictive maintenance
✔️ Vehicle accident detection and earthquake alarms
✔️ Fitness trackers, step counting, and wearable health devices
✔️ HDD protection and free-fall detection systems