High vibration in Cube Orange+

@bresch
Thank you again for the feedback. The graph that you indicated here is almost the same while I was on PXv1.12.3 . Also the battery has not been changed either. The 18650 cells have a 8c capacity . While physically I checked the battery cell voltages, it has been drained !! it reached 3.6V per cell.

Again log file which i did today without a GPS lock .
https://review.px4.io/plot_app?log=0a3e010d-5fb1-4efb-8215-31f665b499ea

@bresch
Can you please advice what is the way to update the firmware to PX4 v1.14.BETA 2 . Does it have any improvements on the control algorithim used for the flight controllers or is it just a firmware update to enroll certain sensor drivers .
thank you

We didn’t change anything on the control algorithm side for quite some time, so don’t expect any change by selecting specific version of 1.14.

However, what I saw in your log is that the PWM range changed:
PWM_MAIN_MIN[1-4]: 1100 (was 1075 before)
PWM_MAIN_MAX[1-4]: 1900 (was 1950)

So if you set the range like it was in your logs with 1.12 you should be able to get a bit more thrust

1 Like

Ok…thank you…I just updated the firmware to PX4 v1.14-RC . Initial tests reveal a better take off and lesser current consumption even though the motor output graphs are showing full 100% .
**Edit - 1 ** PX4 v1.14-rc1 log file

https://review.px4.io/plot_app?log=c9065dfa-48ed-40fc-aa7a-87577be41c6d

https://review.px4.io/plot_app?log=604075b4-f26b-423d-a4e5-8bc5fcc1fab3

https://review.px4.io/plot_app?log=39bf6d92-abb9-42e9-88d0-f35365a7793d

I just got 10 minutes of flight time with your PWM settings. I might give a try using a higher pwm max value on all motors if there is any further improvement on flight time.

thank you once again …

We also did some testing after reducing the IMU_DGYRO_CUTOFF and IMU_GYRO_CUTOFF to 20 Hz which improved the vibration issue but did not solve it completely. Also, formatting the SD card and reinstalling the v1.13 stable release did not lead to any improvements in vibrations or flight behavior. These things in combination with the fact that the vibration issues occur on different platforms (e.g. Cube Orange, Mini) I consider it to be a firmware related issue.

Yes, your feedback has helped me to understand my situation as well. I am not sure who is confirming the Orange Cube board running well on Px4 v1.13.x or v1.14.x
I tried on the v1.14-rc1 . It was stable initially but it consumed massive power that the drone flew only for 3 minutes compared to the 13 minutes flight time i had on the Px4 v1.12.3. :grinning:
In the end i suppose we need to aid the dev team in providing our hard coded logs with real drone flight test rather than a simulator version to understand where the real issues are.
Also I am unable to understand what is a HITL version of Px4 SITL. My understanding was we could understand specific boards such as the CUBE better than a generic flight controller but it seems even that doesnt work !

1 Like

That sounds like a bad regression / issue, could you share two logs for each corresponding flights?

Yes that would be greatly appreciated! Please feel free to report the flight results here (or link to the forum post): [v1.14 Release Candidate] - Flight testing & Flight Issues (logs) · Issue #21358 · PX4/PX4-Autopilot · GitHub

@ junwoo0914

That sounds like a bad regression / issue, could you share two logs for each corresponding flights?

What do you mean by bad regression . Are you referring to the PID values or sensors & devices attached to the drone .

Using PX4 v1.14-rc1
https://review.px4.io/plot_app?log=c9065dfa-48ed-40fc-aa7a-87577be41c6d

using PX4 v1.12.3
https://review.px4.io/plot_app?log=319552eb-753c-454b-9188-f300dc9fa321

Yes that would be greatly appreciated! Please feel free to report the flight results here (or link to the forum post): [v1.14 Release Candidate] - Flight testing & Flight Issues (logs) · Issue #21358 · PX4/PX4-Autopilot · GitHub
Another main concern that I have is regarding the motors spinning vice versa while i upgraded from v1.12.3 to PX4 v1.14-RC1 !! I had to physically change motor wires when moving back to v1.12.3 .

Edited @ 14/09/2023

Hi,

From further development to the whole subject line , I was able to fly the QuadCopter with a PX4 v1.13.3 firmware , after tuning certain hardware including better isolation of cables using aluminum foil . The drone flew well including improved flight time and lower raw acceleration values and better FFT values !
Logs below for your understanding

new log file
https://review.px4.io/plot_app?log=45d681da-f28a-426c-a9d6-8b8c0a65ae87