LIS2DH12 zero-g level offset.

[lbing.1]

Hello everyone,

I'm using lis2dh12 for acceleration measurement. In the datasheet, I find the typical zero-g offset accuracy is +/-40mg. When the device is placed horizontally, the reading of X-axis and Y-axis should be 0. For most of our devices, they work well, the reading is within 40mg when placed horizontally. But there is a device the X-axis reading is always about +100mg, no matter facing up or facing down. Is this a normal operation? Can you please help us analysis the reason?

Sorry for my English, I hope my question is clear.

Thanks.

LiBing​

Best regards

[Ozone]

Are you talking about a custom board ?

Perhaps heat stress from soldering ? Or mechanical stress, from soldering while pressing on it ?

I have no specific experience with the LIS2DH12.

Are the measurements of that device plausible otherwise, e.g. about +-1g when turning the x axis up/down ?

[lbing.1]

Thank you very much for asking my question.

When I turn x axis up to down, the reading from 1101mg to -933mg.

If it's because of the soldering or mechanical, When I turn z axis up to down, the errors of x axis also should became an opposite number, for example from(100, 0, -1000) to (-100, 0, 1000). Is it that? The fact is (100, 0, -1000) to (100, 0, 1000).