Home » Connecting a KX132 Triple Axis Accelerometer to an ESP32 board example

Connecting a KX132 Triple Axis Accelerometer to an ESP32 board example

by shedboy71

In this article we look at one of 2 similar Triple-axis Magnetometer that I recently purchased, the KX132 Triple Axis Accelerometer, and connect it to an ESP32

Sensor Information

The KX132 is a digital accelerometer from Kionix.

The KX132 is a low-power, 16-bit resolution three-axis accelerometer with four user-selectable acceleration measurement ranges of ±2g/4g/8g/16g and has up to a 10kHz (max) output data rate making it ideal for a wide range of acceleration measurements as well as high-speed applications such as vibration and tap sensing.

The KX132 includes a host of features including Freefall detection, Directional Tap™ and Double-Tap™ detection, tilt orientation detection and more.

The Qwiic KX132 can interface with controllers using both I2C and SPI at high speeds so you can use it in an existing Qwiic/I2C chain or on a SPI bus.


Measurement Range: ±2g, ±4g, ±8g, ±16g (User Selectable)
High Resolution (8 or 16-bit)
User-Configurable Output Data Rate (ODR) up to 25600Hz
User-Configurable 3-stage Advanced Data Path featuring low-pass filter, low-pass/high-pass filter, and RMS calculation engine
Wide range of built-in sensing functions

  • Free Fall
  • Directional-Tap™ / Double-Tap™
  • Device Orientation & Activity Algorithms

Low Noise: 130µg/√Hz (varies based on ODR, power mode & other settings)
High-Resolution Wake-Up & Back-to-Sleep Detection with a configurable threshold as low as 3.9mg
512-byte FIFO buffer that continues recording data while being read
Selectable Low-Power or High-Performance operating modes
Low Power with Integrated Voltage Regulator

  • High Performance Operating Current Consumption (400Hz ODR + Wake-Up Detection): 148µA
  • Low Power Operating Current Consumption (0.781Hz ODR + Wake-Up Detection): 0.53µA
  • Standby Current Consumption: 0.5µA

Self-Test Functionality
Digital I2C up to 3.4MHz and Digital SPI up to 10MHz
2x Qwiic Connectors
SPI available on PTH Header Pins
I2C Address: 0x1E (0x1F can be used as an alternate)

Parts Required

You can connect to the sensor using DuPont style jumper wire.


Name Link
Connecting cables



I used 3.3v from the ESP32 Lolin board I used for testing

I also used a Qwiic cable but if you do not have one of them there is an unpopulated set of pins you can solder a header to. This is how you would wire this up


Code Example

I installed the Sparkfun library using the Arduino ide

Click the Manage Libraries … menu item, search for KX132, and select the Sparkfun KX13x library like this

This is one of the examples that gets installed with the library, with a  few comments and unused lines removed.

#include <Wire.h>
#include <SparkFun_KX13X.h>

SparkFun_KX132 kxAccel;

outputData myData; // Struct for the accelerometer's data

void setup()


  // Wait for the Serial monitor to be opened.
  while (!Serial)

  if (!kxAccel.begin())
    Serial.println("Could not communicate with the the KX13X");
    while (1)

  if (kxAccel.softwareReset())

  // Give some time for the accelerometer to reset.

  // Many settings for KX13X can only be
  // applied when the accelerometer is powered down.

  kxAccel.setRange(SFE_KX132_RANGE16G); // 16g Range
  kxAccel.enableDataEngine(); // Enables the bit that indicates data is ready.

void loop()
  // Check if data is ready.
  if (kxAccel.dataReady())
    Serial.print("X: ");
    Serial.print(myData.xData, 4);
    Serial.print(" Y: ");
    Serial.print(myData.yData, 4);
    Serial.print(" Z: ");
    Serial.print(myData.zData, 4);



When run and the sensor was moved around

X: 0.0005 Y: -0.6676 Z: -0.7608
X: 0.0464 Y: -0.6598 Z: -0.7544
X: 0.0600 Y: -0.6324 Z: -0.8428
X: 0.1459 Y: -0.6759 Z: -0.8589



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