kriswiner
commented
6 years ago Mag vaues do not look right. Mz when flat and motion less should be the same but opposite sign when the board is turned upside down, for example. Check expected magnetic field at your location, your MPU9250 should more or less agree with these numbers.
On Sat, Mar 31, 2018 at 8:12 AM, pradeep14581 notifications@github.com wrote:
hi thanks for such a wonderful library. I am using CC2650 launchpad (cortex arm m3) of Texas Instruments and i am using your library for reading the data from mpu9250. I have calibrated the mpu9250 as givrn in the following link
120 https://github.com/kriswiner/MPU9250/issues/120
https://github.com/kriswiner/MPU6050/wiki/Simple-and- Effective-Magnetometer-Calibration
126 https://github.com/kriswiner/MPU9250/issues/126
and when mpu9250 is at rest and flat, i am getting accelerometer value as 0.001, -0.07, 1.01 0.002, -0.10,1.03 etc gyrometer value as 0.10, -0.32, 0.9 0.5, -0.41, 0.6 etc and magnetometer value 209.9145 323.8681 371.8486 215.9120 335.8632 371.8486 206.9157 323.8681 353.8559 215.9120 332.8644 359.8534 etc. i do not know how to verify the magnetometer value whether it is correct or not. if is there any way please tell me. after calibration i am getting gyro bias 1.0381 -4.2290 1.8396 accelerometer bias -0.1036 0.0220 -0.0525 and magnetometer bias scale 54 391 112 1.19 0.94 0.90 51 384 150 1.5 0.9 0.86 35 457 152 1.3 0.88 0.82 etc when i calculated the roll, pitch and angle i am getting roll and yaw angle fine but getting error in pitch angle. i am getting 75-80 degree only when i rotate around y-axis. when i rotate mpu9250 around x-axis only roll angle changes and nominal change in pitch and yaw angle(around 20-30 degree). and same for the yaw angle also. But when i rotate around y-axis pitch angle is changing along with yaw also changing drastically but nominal change in roll angle. i performed these test by rotating mpu9250 90 and 180 degree thank you.
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pradeep8892
hi thanks for such a wonderful library. I am using CC2650 launchpad (cortex arm m3) of Texas Instruments and i am using your library for reading the data from mpu9250. I have calibrated the mpu9250 as givrn in the following link https://github.com/kriswiner/MPU9250/issues/120 https://github.com/kriswiner/MPU6050/wiki/Simple-and-Effective-Magnetometer-Calibration https://github.com/kriswiner/MPU9250/issues/126
and when mpu9250 is at rest and flat, i am getting accelerometer value as 0.001, -0.07, 1.01 0.002, -0.10,1.03 etc gyrometer value as 0.10, -0.32, 0.9 0.5, -0.41, 0.6 etc and magnetometer value
209.9145 323.8681 371.8486 215.9120 335.8632 371.8486 206.9157 323.8681 353.8559 215.9120 332.8644 359.8534 etc. i do not know how to verify the magnetometer value whether it is correct or not. if is there any way please tell me. after calibration i am getting gyro bias 1.0381 -4.2290 1.8396 accelerometer bias -0.1036 0.0220 -0.0525 and magnetometer bias , ...... scale 54 391 112 , 1.19 0.94 0.90 51 384 150, 1.5 0.9 0.86 35 457 152, 1.3 0.88 0.82 etc when i calculated the roll, pitch and angle i am getting roll and yaw angle fine but getting error in pitch angle. i am getting 75-80 degree only when i rotate around y-axis. when i rotate mpu9250 around x-axis only roll angle changes and nominal change in pitch and yaw angle(around 20-30 degree). and same for the yaw angle also. But when i rotate around y-axis pitch angle is changing along with yaw also changing drastically but nominal change in roll angle. i performed these test by rotating mpu9250 90 and 180 degree thank you.