AC 3.1.5 + PIXHAWK and ALThold problem

Hi all,

I have unexpected problem with my new quadrocopter with the pixhawk.

If I switch to the ALThold mode during the flight the copter became a rocket. It climbes on the full trottle until I switch it back to stabilaze mode. I cant find the problem in logs or settings. Could anyone help?? same setup with an APM worked great before.

I would like to know what means following parameters from logfile:

CTUN: DCRT, DALT

3691129326?profile=original

My setup:

Quadrocopter

Pixhawk

No sonar yet

Taranis and X8R

2x5000mAh 4s

HK BS 30A ESC + old SimonK FW rock solid after trial and errors (mostly errors)

Thanks for any help

Peter

SMdrone_latest.param

2014-06-11 19-36-23.zip

2014-06-13 19-04-21.zip

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Replies

  • Hi,


    I finally solved the problem. In my case it was truly bad and accidental setting of one parameter (PILOT_VELZ_MAX cca 32000). Now it flies OK.

    Thanks for yours answers.

    Regards Petr

  • I had a similar problem when I added a camera to my quad that caused more vibration:

    http://diydrones.com/forum/topics/arducopter-3-2-beta-testing?comme...

    Even with lots of vibration, its odd that full thrust would be commanded for a significant duration to shoot it up into the sky way beyond the target altitude. (WPAlt isn't in the log files any longer. I'm not sure what replaced it.)

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