SPECIFICATIONS

The ADXL343 is a high-performance three-axis digital accelerometer module. It uses the original ADXL343 chip from ADI and offers multiple measurement ranges of ±2g, ±4g, ±8g, and ±16g. It features ultra-low power consumption and motion wake-up capabilities, making it an ideal choice for the Internet of Things, wearable devices, and motion sensing applications!

Typical application scenarios:

✔ Smart wristbands/watch for motion monitoring

✔ Drone/robot posture control

✔ Game controllers/VR device motion sensing

✔ Industrial equipment vibration monitoring

✔ Fall detection alarm device

Five core advantages

✅ 14-bit high precision: Resolution reaches 3.9mg/LSB, accurately capturing minute movements

✅ Ultra-low power consumption: Measurement mode is only 23μA, standby mode is 0.1μA (Power-saving genius!)

✅ Intelligent interrupt: Supports free fall, tapping, double-clicking and other motion detection

✅ Dual interface support: I2C (default address 0x53) and SPI dual communication interfaces

✅ Plug-and-play: Onboard 3.3V voltage regulator, compatible with 5V/3.3V systems

Detailed technical parameters

Parameter itemSpecification

Chip modelADI ADXL343

Measurement range ±2g/±4g/±8g/±16g (software adjustable)

Resolution 14 bits (3.9mg/LSB)

Output data rate 0.1Hz~3200Hz adjustable

Communication interface I2C (0x53) + SPI

Operating voltage 2.0V~3.6V (board-mounted 3.3V regulator)

Operating current 23μA (measurement mode)

Temperature range -40℃ ~ +85℃

Module size 17.6mm×25.3mm

The ADXL345 Breakout has an I2C address of 0x53. It can share the I2C bus with other I2C devices as long as each device has a unique address. Only 4 connections are required for I2C communication:

GND -> GND

VIN -> +5v

SDA -> SDA (Analog 4 on "Classic Arduinos")

SCL -> SCL (Analog 5 on "Classic Arduinos")

The Adafruit breakout has level shifting and regulation circuitry so you can power it from 3-5V and use 3V or 5V logic levels for I2C.

Connect SCL on the Metro to SCL (yellow wire) on the ADXL343

Connect SDA on the Metro to SDA (blue wire) in the ADXL343

Connect GND on the Metro to GND (black wire) on the ADXL343

For 3.3V LOGIC boards: connect 3.3V on the Arduino/Metro to VIN (red wire) on the ADXL343

For 5.0V LOGIC boards: Connect 5V on the Arduino/Metro to VIN (red wire) on the ADXL343