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kriswiner / EM7180_SENtral_sensor_hub

(Affordable) Ultimate Sensor Fusion Solution
https://www.tindie.com/products/onehorse/ultimate-sensor-fusion-solution/
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Roll and Pitch Accuracy levels #56

Closed sls12 closed 5 years ago

sls12 commented 5 years ago

Thanks for things up here.

Curious about the kind of roll and pitch accuracy levels that can be obtained with MPU-9250/ICM 20948 or any of the ST MEMS.

Generally it is believed to be <1 deg, though haven't found anything specific. Is it possible to get better than that?

Thanks.

kriswiner commented 5 years ago

In all of our testing of heading we generally see pitch and roll at 1 degree error or less. We have recently procured a 2-axis goniometer and are doing some testing of heading as a function of different pitch and roll angles. But generally we would not test pitch and roll accuracy specifically.

If your goal is to estimate pitch and roll only, then using an accel/gyro like the LSM6DSM with proper calibration is enough to rather easily achieve the <1 degree rms standard. How much better you could do? I do not know. What is the requirement?

On Sun, May 5, 2019 at 12:40 AM Srinivas notifications@github.com wrote:

Thanks for things up here.

Curious about the kind of roll and pitch accuracy levels that can be obtained with MPU-9250/ICM 20948 or any of the ST MEMS.

Generally it is believed to be <1 deg, though haven't found anything specific. Is it possible to get better than that?

Thanks.

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sls12 commented 5 years ago

Looking at something close to 0.1 degrees for roll, pitch and yaw. May be its a big ask!

kriswiner commented 5 years ago

The real questions is, how well can you do with a good sensor suite and proper calibration methods? In other words, the answer you need will only come from actual testing.

On Mon, May 6, 2019 at 9:31 AM Srinivas notifications@github.com wrote:

Looking at something close to 0.1 degrees for roll, pitch and yaw. May be its a big ask!

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sls12 commented 5 years ago

Yea. That makes sense. What would be your suggestion for a good sensor suite?

kriswiner commented 5 years ago

LSM6DSM

On Mon, May 6, 2019 at 9:37 AM Srinivas notifications@github.com wrote:

Yea. That makes sense. What would be your suggestion for a good sensor suite?

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