Question on MPU6050

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hi,

i tried use mpu6050 motion detection. when setup device , use jeff's library, there offset(acceleration x,y,z , gryo x,y,z) need set each mpu6050.

i tried value comes library, tried auto calibration code , tried random numbers, of them give me same number world acceleration value. little confused: offset matter?

another thing world acceleration. understanding, if don't move device, x, y, z value of world acceleration should close 0. value got when put device flat( chip face up). however, when turn device vertical, got error on z value, constant error around 800, , error affected angle of device. guessing compensation of gravity not absolutely accurate. how can adjust it?

any other device recommended world acceleration?

thanks

quote from: catccaatt on jul 04, 2016, 07:47 am
for understanding, if don't move device, x, y, z value of world acceleration should close 0.
no. accelerometers measure force, not acceleration. therefore, if device sitting still show non 0 value in direction normal face of earth due force of gravity.

p.s. "world acceleration" mean?


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