Raw readings from accelerometer in the LSM9DS0

remote · ‎2014-02-27

Posted on February 27, 2014 at 16:52

Hi,

My raw readings from the accelerometer of the LSM9DS0 MEMS have a big offset in two axis, it's about 0.15 G in the x-axis and .07 G in the z-axis. i find these offsets about 15% and 7% in these axis are a bit strange, especially when is said that the sensor come calibrated from factory. Could you confirm me if is a normal situation?

Regards

Miguel Rasteiro

onehorse · ‎2014-05-20

Posted on May 21, 2014 at 07:46

150 mg is a tad large but I have seen tens of mg offset in my LSM9DS0s. It is straightforward to calibrate both the gyro and accelerometer using the FIFO to collect and subsequently average readings to calculate the appropriate offsets. This is good practice no matter what type of factory calibration is claimed. See https://github.com/sparkfun/LSM9DS0_Breakout/tree/master/Libraries/Arduino/SFE_LSM9DS0 to see an example.