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LIS3DH Triple-Axis Accelerometer (+-2g/4g/8g/16g)

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The LIS3DH is a very popular low power triple-axis accelerometer. It's low-cost, but has just about every 'extra' you'd want in an accelerometer:

  • Three axis sensing
  • ±2g/±4g/±8g/±16g selectable scaling
  • Both I2C (2 possible addresses) and SPI interface options
  • Interrupt output
  • Multiple data rate options 1 Hz to 5Khz
  • As low as 2uA current draw (just the chip itself, not including any supporting circuitry)
  • Tap, Double-tap, orientation & freefall detection
  • 3 additional ADC inputs you can read over I2C

 

We kept seeing this accelerometer in teardowns of commercial products and figured that if it's the most-commonly used accelerometer, its worth having a breakout board!

This sensor communicates over I2C or SPI (Adafruit library code supports both) so you can share it with a bunch of other sensors on the same I2C bus. There's an address selection pin so you can have two accelerometers share an I2C bus.

The input voltage is 3.3V, you can use a level shifter on the I2C pins.

Tutorial: https://learn.adafruit.com/adafruit-lis3dh-triple-axis-accelerometer-breakout

Data program download: https://pan.baidu.com/s/1yESeWcOGhC-z0_gc2tcKvA

LIS3DSH built-in two finite state machine three-axis high-resolution accelerometer modules  

The LIS3DSH is an ultra-low-power, high-performance, three-axis linear acceleration family that is a "nano" embedded state machine that can be programmed to implement autonomous applications. 


The LIS3DSH features a dynamic selectable ±2g / ±4G / ± 6g / ± 8G / ± 16g full scale, which is capable of measuring acceleration output data rates from 3.125 Hz to 1.6 kHz.  
The self-test feature allows the user to check the sensor's functionality in the final application.  
The device can be configured to generate interrupt signals that are activated by user-defined motion modes.  
The LIS3DSH has a comprehensive first, first out (FIFO) buffer that allows the user to store data for reduced host processor intervention.  
The LIS3DSH is packaged in a small thin plastic grid array (LGA) that is guaranteed to operate over the extended temperature range from -40°C to +85°C.
main feature
  • Wide supply voltage from 1.71 V to 3.6 V
  • Independent IO power (1.8V) and power supply voltage compatible
  • Ultra-low power consumption ±2g / ± 4G / ± 6g / ± 8G / ± 16g dynamic optional full scale
  • IIC  / SPI digital output interface
  • 16-bit data output
  • Programmable embedded state machine
  • Embedded temperature sensor
  • Embedded self test
  • Embedded first in, first out
  • 10000 g high impact resistance
  • Dimensions
  • Pin definition

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    Connection

    Group

    Name

    Direction

    Description

    I2C

    SPI

    Serial

    CS

    I

    Chip select (for SPI)

    NC

    !CS

    SDO

    O

    Data output (MISO for SPI)

    NC

    MISO

    SCL

    I

    Data clock

    SCL

    SCK

    SDA

    I/O

    Data in (SDA for I2C, MOSI for SPI)

    SDA

    MOSI

    Interrupts

    I NT 1

    O

    Primary int has FIFO + motion

    Optional MCU

    I NT 2

    O

    Secondary int has motion

    Optional MCU

    ADC

    A DC 1

    I

    Analog in

    Optional

    A DC 2

    I

    Analog in

    Optional

    A DC 3

    I

    Analog in (unused for temp readings)

    Optional

    Power

    VCC

    I

    3.3V input

    Supply

    GND

    I

    Ground connection (either PTH)

    Supply

     

    In the front bottom, there is a th jumper pads correspond I2C address adjustment function . The weldment status uses address 0x18 , otherwise it remains open at 0x19 . Special attention is to use SPI here whenkept off .

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    Test instruction

    Download routine library file

    1) gyroscope test

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    2. ADC function test;
  • 3. FIFO test;

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