Product description: KX134 - 3-axis I2C Qwiic accelerometer - SparkFun SEN-17589
KX134 3-axis digital accelerometer embedded on a module from SparkFun. The board features low power consumption and 16-bit resolution with selectable acceleration measurement range: ± 8 g / 16 g / 32 g / 64 g, maximum data rate is 10 kHz. Module communicates via I2C or SPI interface. It is equipped with two Qwiic connectors enabling simple connection via I2C interface. It is powered from 1.7 V to 3.6 V.
KX132 accelerometer module also available.
KX134 accelerometer.KX134 accelerometer main features
- Measuring range: ± 8 g / 16 g / 32 g / 64 g
- User-configurable 3-stage Advanced Data Path (ADP) with low pass and low/high pass filter and RMS calculation engine
- User-selectable low-power and high-performance modes
- Configurable output data rate (ODR) up to 25,600 Hz
- High resolution Wake-UP / Back-to-Sleep with configurable 39 mg thresholds
- Free fall detection
- Directional tapping / double tapping
- Device orientation algorithms
- Built-in 512-bit FIFO buffer (controls recording while reading)
- Digital I2C interface up to 3.4 MHz and SPI up to 10 MHz
Accelerometer module pinouts
KX13x uses I2C or SPI bus for communication. It has two Qwiic pins for easy I2C communication and 2.54 pins for I2C and SPI communication.
Pinouts of accelerometer module.| System ground | |
| Supply voltage 3.3 V | |
| I2C bus data line | |
| I2C bus clock line | |
| I2C bus address selector pin | |
| MISO data output of SPI bus | |
| SPI bus clock line | |
| MOSI data input of SPI bus | |
| Chip Select pin | |
| External interrupts | |
| External interrupts | |
| Trigger pin |
SparkFun 3-axis accelerometer module.Specification for KX134 accelerometer module
- Supply voltage: 1.7 V to 3.6 V (3.3 V for Qwiic)
- Current consumption:
- high efficiency / Wake-up detection (ODR = 800 Hz): 148 µA
- low power consumption / Wake-up detection (OD = 0.781 Hz): 0.53 µA
- Standby mode: 0.50 µA
- Measuring range: ± 8 g / 16 g / 32 g / 64 g
- Resolution: 8 or 16-bit
- Operating temperature: -40°C to 105°C
- Output speed: 0.781 Hz to 25600 Hz (typically 50 Hz)
- Sensitivity (16-bit):
- ±8g: 3768 to 4424 counts/g
- ±16g: 1884 to 2212 counts/g
- ±32g: 942 to 1106 counts/g
- ±64g: 471 to 553 counts/g
- Noise:
- RMS: 0.7 mg
- Density: 150 µg/√Hz
- I2C address: 0x1E, alternatively 1x1F
- Communication: I2C / SPI
- 2x Qwiic connector
- Dimensions: 25.4 x 25.4 mm
