MPU9250: Are my values correct?

Navio / Edge Hardware
1

I’m checking the output of the sample AccelGyroMag.py application and the values sounds strange to me.
My Navio is sitting on my desktop and I was expecting stable values coming from the accelerometer, however here is my result:

pi@raspberrypi:/opt/navio2/Navio2/Python $ python AccelGyroMag.py -i mpu
Selected: MPU9250
Connection established: False
Acc: +23.233 +0.091 +1.877 Gyr: -0.867 +0.001 +0.001 Mag: -4939.050 +27.231 +0.000
Acc: +0.043 +0.383 +9.855 Gyr: +0.004 +0.027 +0.009 Mag: +0.000 +28.359 +12.704
Acc: -3.898 +0.043 +0.029 Gyr: +0.001 +0.003 +0.012 Mag: +37.228 +0.322 +13.226
Acc: +0.024 +0.622 +9.845 Gyr: +0.026 +0.009 +0.007 Mag: +35.625 +27.231 +0.348
Acc: -7.925 +0.388 +9.845 Gyr: +0.020 +0.012 +0.009 Mag: +0.000 +27.715 +11.137
Acc: +0.053 +0.005 +0.474 Gyr: +0.010 +5.146 +0.010 Mag: +34.378 +0.322 +12.530
Acc: +0.000 +0.393 +9.850 Gyr: +0.020 +0.009 +0.006 Mag: +35.625 +25.942 +0.348
Acc: -7.925 +0.383 +9.893 Gyr: +0.019 +0.018 +0.010 Mag: +0.356 +26.426 +11.312
Acc: -3.859 +0.043 +0.005 Gyr: +0.000 +0.002 +0.009 Mag: +35.625 +0.322 +11.834
Acc: +0.024 +0.431 +9.811 Gyr: +0.000 +0.001 +0.003 Mag: +34.913 +27.070 +0.000
Acc: -7.930 +0.259 +9.888 Gyr: +0.002 +0.018 +0.009 Mag: +0.356 +27.715 +12.530
Acc: -3.859 +0.038 +0.019 Gyr: +0.001 +0.019 +0.012 Mag: +34.200 +0.000 +11.834
Acc: +0.000 +0.321 +9.807 Gyr: +0.002 +0.010 +0.003 Mag: +34.913 +27.070 +0.000
Acc: -7.968 +0.407 +9.807 Gyr: +0.023 +0.011 +0.010 Mag: +0.356 +27.715 +11.137
Acc: -3.893 +0.005 +0.172 Gyr: +0.000 +5.133 +0.010 Mag: +34.378 +0.322 +11.834
Acc: +23.238 +0.043 +9.845 Gyr: +0.028 +0.009 +0.003 Mag: +37.050 +27.070 +0.348
Acc: +0.038 +0.397 +9.936 Gyr: +0.024 +0.019 +0.010 Mag: +0.000 +28.359 +12.530

Is this a normal behaviour or what ?

2

The values are wrong and you have “Connection established: False”. Are you running examples at the same time with APM? Is Navio2 properly fixed to the RPi? Can you provide a picture?

1 Like
3

I don’t have APM installed at all, i’m just running the navio2 samples with the standard raspbian image, the device is properly fixed on my RPi. LED sample works indeed.

4

Please install our image, that will solve your issue.

5

Thanks Igor, the current image doesn’t support P3… or i’m wrong ?

6

Not yet, but we will release an updated image. There is still some work to do on it. Hopefully next week.

1 Like