I have a question about LSM6DS33

newdrive

I have a question about LSM6DS33 [Copy link]

 Hello: There are three questions about ST sensors that need to be answered: 1. Can the drivers of the two devices LSM6DS33 and LSM6DS3 be shared? I have used LSM6DS33 before. 2. The Yaw axis of LSM6DS33 drifts when it is stationary. I used the host computer to check it. I wonder if there is a better solution. 3. What do the two parameters (LA_TyOff G_TyOff) shown in the figure below mean? My understanding is: after the chip is welded, does the acceleration still have a baseline error of ±40mg in a weightless state? Similarly, does the gyroscope also have a baseline error of ±10dps when it is stationary? Then how should we deal with these two parameters? Or is it unnecessary? Attached is the LSM6DS33 manual and the question picture. Friends who know can give me some advice, thank you

littleshrimp

It is not recommended to share the driver. Although most of the registers of LSM6DS33 and LSM6DS3 are the same except for some registers (for example, 4D-52 LSM6DS33 is reserved, while the corresponding register of LSM6DS3 is SENSORHUBxx_REG), if you look closely, you will find that the functions of some registers with the same address are different. LA_TyOff and G_TyOff should be the zero offset of acceleration and angular velocity. When the acceleration and angular velocity are 0, the sensor should theoretically output 0, but the actual sensor will have an output offset within a specified range. The zero offset of acceleration and gyroscope can be solved by calibration, but it cannot be completely eliminated. The size of the offset will also be affected by temperature.

newdrive

OK received. Thank you very much: handshake