I'm using the Arduino Nano BLE Sense Rev 2 board and its IMU to get real-time absolute orientation angles (pitch, roll, yaw). However, I am encountering an issue. When I perform a pitch rotation, the yaw value also changes significantly. Additionally, when I actually rotate the board by 90 degrees, …

Please edit your post to add code tags. Instructions can be found in the "How to get the best out of this forum" post. The fusion code won't work as expected unless the gyro and the magnetometer are both correctly calibrated. You may also need to calibrate the accelerometer. An excellent tutorial …

[image] huangyd: // Calibrate magnetometer //calibrateMagnetometer(); Did you purposefully turn off the required magnetometer calibration? The primitive approach in the code won't work well, but it is much better than nothing.

I edited the new code with accelerometer, gyro and magnetometer calibration in the code, but the Euler angle from the print looks still very weird. When the IMU is stationary, the data is not stable enough, and the Euler angles after yaw, pitch, and roll rotations are clearly incorrect. Could this b…

Sorry, in the running code, I did add calibrateMagnetometer() in the setup and did about 1 min rotating in random direction.

Post the revised code, using code tags. You can check the calibration of the sensors by making 3D plots. The corrected mag/accel data should be spheres centered on the origin, as shown in this forum post . Two comments on potential fatal errors in the original code: the gyro data must be scaled t…

Beats me why so many try to re-invent the wheel under the pretext of "need to learn". A $40 flight controller and free iNav or whatever software has already done the hard yards and even more plus plus plus...........

Troubleshooting IMU Orientation Issues on Arduino Nano BLE Sense Rev 2

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jremington August 9, 2024, 8:24pm 9

See this post for a suggestion BLE Sense Rev2 IMU & Magnetometer Sensor Fusion - values drift, what is the correct axis orientation for BMI270/BMM150? - #3 by jremington

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Troubleshooting IMU Orientation Issues on Arduino Nano BLE Sense Rev 2

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