SparkFun Triple Axis Accelerometer Breakout - KX134 (Qwiic)

This SparkFun Triple-Axis Accelerometer Breakout is a simple Qwiic breakout for the KX134 digital accelerometer from Kionix. The KX134 is a low-power, 16-bit resolution three-axis accelerometer capable of measuring ±8g/16g/32g/64g (user-selectable) and has up to a 10kHz output data rate making it ideal for high-g measurements as well as high-speed applications such as vibration sensing.

The KX134 includes a host of features including Freefall detection, Directional Tap^™ and Double-Tap^™ detection, tilt orientation detection and more. The Qwiic KX134 can interface with controllers using both I²C and SPI at high speeds so you can use it in an existing Qwiic chain or on a SPI bus.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.

Features:

• Measurement Range: ±8g, ±16g, ±32g, ±64g (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 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 alternate)

Documents:

• Schematic
• Eagle Files
• Board Dimensions
• Hookup Guide
• Datasheet - KX134-1211
• Technical Reference Manual - KX134-1211
• AN092 Getting Started App Note
• Qwiic Info Page
• Arduino Library
• Python Package
• GitHub Hardware Repository

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