Part Datasheet Search > ST Microelectronics > LIS2DW12 Datasheet PDF > LIS2DW12 Features Description Parametrics Pages 1/6
LIS2DW12 Features Description Parametrics - ST Microelectronics
| Manufacturer: | ST Microelectronics |
| Description: | MEMS digital output motion sensor:high-performance ultra-low-power 3-axis "femto" accelerometer |
| Pictures: |
LIS2DW12Datasheet PDF
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December 2015
DT0053 Rev 1
1/6
www.st.com
DT0053
Design tip
6-point tumble sensor calibration
By Andrea Vitali
Main components
H3LIS331DL
MEMS motion sensor: low power high g 3-axis digital
accelerometer
LSM6DS3
iNEMO inertial module: 3D accelerometer and 3D gyroscope
Purpose and benefits
This design tip explains how to compute offsets, gains, and cross-axis gains for a 3-axis
sensor (usually an accelerometer) by performing a 6-point tumble calibration. A
generalization of the algorithm is also described.
Benefits:
Added functionality with respect to calibration provided by the osxMotionFX library
which only provides Magnetometer and Gyroscope calibration and not Accelerometer
calibration.
Short and essential implementation, which enables easy customization and
enhancement by the end-user (osxMotionFX is available only in binary format, not as
source code)
Easy to use on every microcontroller (osxMotionFX can only be run on STM32 and
only when the proper license has been issued by Open.MEMS license server).
Specification
Algorithm specification:
Input from 3-axis sensor: [x,y,z] data triplets for each position (minimum 4, usually 6, N
using the generalized algorithm)
Output: offsets for each axis (Xofs, Yofs, Zofs), gains for each axis (Xgain, Ygain, Zgain)
and cross-gains (YtoX, ZtoX, XtoY, ZtoY, XtoZ, YtoZ)
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