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, 10-bit precision
- ±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
To all that, we've also added:
- 3.3V regulator + level shifting, so you can safely use with any Arduino or microcontroller without the need for an external level shifter!
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 (our 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.
To get you going fast, we spun up a custom made PCB in theSTEMMA QT form factor
, making them easy to interface with. The STEMMA QT connectors
on either side are compatible with the SparkFun Qwiic
I2C connectors. This allows you to make solderless connections between your development board and the LIS331s or to chain them with a wide range of other sensors and accessories using a compatible cable
. We’ve of course broken out all the pins to standard headers and added a voltage regulator and level shifting so allow you to use it with either 3.3V or 5V systems such as the Raspberry Pi + Feather series or Arduino Uno respectively.
Comes with a bit of 0.1" standard header in case you want to use it with a breadboard or perfboard. Four mounting holes for easy attachment.Check out our tutorial for all sorts of details, including pinouts, assembly, wiring, and more!