Accel Calibration Failed - IMU problems

Cube Autopilot
1

Hi guys,
Have a nice day!

I am setup cube orange and Here 3 GPS. But I have a little problem with the cube, I can’t ACCEL Calibration. I tried many times with 4.0.7 copter stable firmware but failed. ( it also fails with older stable firmware)

I realized that the IMU sensor seems to be not good. IMU2 az2 has a high value (-15999) and does not change when Pixhawk moves.

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I also tried disabling IMU 2 (INS_USE2 = 0) and setting EK2_IMU_MASK = 5. But still no success.

If I set INS_ENABLE_MASK = 5 to disable IMU2, Pixhawk shows error Check BRD_TYPE: INS: unable to initialise driver, but I am sure BRD_TYPE = 3.

( same result if i disable both IMU 1 and 2 or 2 and 3)

I have attached log file.
Log_bitmask=655358 Full IMU
Log_bitmask( Default)
Could you help or give me advice?

Thanks

Trinh

2

Are you installing the correct firmware for cube Orange ? It must be the Orange build.

3

@MadRC Thank for your advice, but I sure about Cube Orange Firmware

4

I have same exact error with same exact axis i also tried to disable second imu and got the “Check BRD_TYPE: INS: unable to initialise driver” error

Firmware is correct for cube orange and tried 4.0.3 - 4.0.7 and 4.1

5

@Thanhtrinh Hi! Did you resolve this issue? Have the same az2 -15999
on px4 got message ACC1 clipping, not safe to fly

6

Hi everyone, we are experiencing the same problem. The second IMU x-axis acceleration is fixed at -15999. I shared the flight logs below. Please don’t mind the bad tune or lack of a notch filter. We are working on it.

https://drive.google.com/drive/folders/1ZVzIn9FPL7EgWxWs5rcpGVvs5JJUayWH?usp=sharing

7

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in general apart from what looks to be a rought landing/takeoff i dont see any issues with these logs?

are you use your telem link was wokring ok?

8

Hi Michael,

This vehicle was 3D accel calibrated. You can see the IMU2 Accx value was zero all the time and the INS_ACC2OFFS_X value was -156.8922.

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9

Do you think this is a driver problem or hardware problem? Either way, it will be safer to disable this IMU.