how to understand raw data of outputed from accelerometer

Posted on May 07, 2017 at 19:43

this is the

LIS3DSH

accelerometer on stm32f4discovery board

0.12 mg/digit sensitivity it has how to calculate exact output with respect to unit of g

is there any tutorial or documentation that explain stuff.

##lis3dsh #mems #accelerometer

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Best answer by Tesla DeLorean

Posted on May 07, 2017 at 20:03

It's just basic maths, you take the 16-bit signed integer, cast it into something like a float or double, and scale it.

ie float x = (float)OUT_X * 0.12e-3; // x is now a value in units G

The OUT_X holds a value +32767 to -32768, or +/-3.93G, ie think 32768.0 * 0.12e-3

Guru

Posted on May 07, 2017 at 20:03

It's just basic maths, you take the 16-bit signed integer, cast it into something like a float or double, and scale it.

ie float x = (float)OUT_X * 0.12e-3; // x is now a value in units G

The OUT_X holds a value +32767 to -32768, or +/-3.93G, ie think 32768.0 * 0.12e-3

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Associate II

Posted on May 07, 2017 at 20:20

thank you

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