ADXL345 Accelerometer Module

ADXL 345 - Robocraze

ADXL345 Accelerometer Module

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  • 3V-6V DC Supply Voltage
  • Onboard LDO Voltage regulator
  • Built in Voltage level convertor (MOSFET based)
  • Can be interface with 3V3 or 5V Microcontroller.
  • All necessary Components are populated.
  • Ultra Low Power: 40uA in measurement mode, 0.1uA in standby@ 2.5V
  • Tap/Double Tap Detection
  • Free-Fall Detection
  • SPI and I2C interfaces

ADXL345 Accelerometer Module

ADXL345 is a Breakout board for the Analog Device's ADXL345 triple-axis accelerometer. The module is populated with MOSFET-based Voltage level conversion circuitry to enable you to interface with different types of microcontrollers (3V3 & 5V). Apart from the above all, necessary components like decoupling capacitors, filter capacitors, pull-up resistors and LED are also populated on board.

It is ideal for motion and acceleration sensing applications.It is a low-power, 3-axis MEMS accelerometer module with both I2C and SPI interfaces.

 The ADXL345 is a low-power, MEMS, three-axis accelerometer module with both SPI and I2C interfaces to communicate with your controller like Arduino, Raspberry Pi, PIC, etc. It also has user-selectable sensitivity and 10-13bit of resolution. This Digital Accelerometer has a voltage regulator on board hence can be connected to both 5V and 3.3V powered controllers. Its high-resolution 4mg/LSB also enables it to measure less than 1° change in the orientation of the object. The ADXL Sensor can be used in Robotics applications, measuring vibration in a machine, in the data acquisition system of a vehicle, measuring the motions of a bridge, etc. It can also be used to detect taps on an object.

The ADXL345 features 4 sensitivity ranges from +/- 2G to +/- 16G. And it supports output data rates ranging from 10Hz to 3200Hz such as the Arduino.

Applications:

  • Cost-sensitive, low power, motion- and tilt-sensing applications
  • Mobile devices
  • Gaming systems
  • Data acquisition system of a vehicle
  • Measuring vibration in a machine
  • Disk drive protection
  • Image stabilization
  • Sports and health devices

Package Includes:

  • 1 x ADXL 345 Module

Specifications

Supply Voltage 3.3 V/ 5V
Interface Type I2C, SPI
Sensing Range ±2g, ±4g, ±8g, ±16g
X 28.6 LSB/g
Y 31.2 LSB/g
Z 34.5 LSB/g
Dimensions  3 x 2 x 1cms 
Weight  5 grams

Frequently Asked Questions

1. What is accelerometer ADXL345?

  • The ADXL345 is a small, thin, ultralow power 3-axis accelerometer capable of measuring up to 16 g with high resolution (13-bit). Digital output data is in 16-bit two's complement format and can be accessed via an SPI (3- or 4-wire) or I2C digital interface.

2. How do you use ADXL345 accelerometer with Arduino?

  • To connect an ADXL345 with Accelerometer follow the steps mentioned below:
    • Connect the ADXl345's GND pin to the Arduino's GND pin.
    • Connect the ADXL345's VCC pin to the Arduino's 3.3V pin.
    • Connect the ADXL345's SCL pin to the Arduino's SCL pin.
    • Connect the ADXL345's SDA pin to the Arduino's SCL pin.
    • Run the Program in Arduino IDE.

3. Is ADXL345 a gyroscope?

  • No, ADXL345 is a 3-axis accelerometer that senses both static acceleration (due to gravity) as well as dynamic acceleration (due to motion or shock). So, it can be used as a tilt sensor or to detect free fall. 

4. What is the difference between ADXL335 and ADXL345?

  • ADXL345 has a measuring range between ±2g and ±16 g. The sensor has an accuracy angle measurement of less than 1° and power consumption of about ten times less than the ADXL335 version when it is in sleep mode. The ADXL345 is a digital sensor that uses the I2C or SPI digital protocols to return values.