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Member #2739

Member Since: March 24, 2006

Country: Finland

  • Also applies to +MickeyMouse:s question

    MEMS gyros/accelerometers (and probably inclinometers too but IDK) are noisy as hell, even with relatively good kalman filtering you’re unlikely to get repeatability to fractions of degree. rotation around the “Z” axis (assuming gravity eg up<->down is Z) is especially difficult and if you rotate 180deg one way and then back the reading is likely to be off by several degrees (tilts are easier since they can be correlated with accelerometer data).

    All of the above applies to “older generation” IMUs, this one might be significantly better (but probably isn’t, there are inherent limits in MEMS technology and it will never be comparable with proper laser-gyros, but we’re not building space shuttles.)

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