Discussions

after doing the AutoTune the drone becomes too responsive (over sensetive)

Posted by Geert Pirens on December 2, 2014 at 11:21am

Hi,

After I did a AutoTune my drone became too responsive.

Before AutoTune flying was way more pleasant.

To rollback these settings do I have to change the PIDs to it's defauld settings?

This is my setup:

Pixhawk with Hexa Arducopter 3.2-rc14

Mission planner 1.3.15.2 (Beta)

Below the screenschots of the PIDs before and after AutoTune:

i'm not familiar with these settings and not certain what to change.

any advice is welcome!

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Replies

Rodney Johnson December 2, 2014 at 5:59pm

I would retry auto tune as Jan had also suggested, if that still does not help I would manually set P.I.D's back to what they were when it was flying better. take off ,, stay low ,, less then 10FT and test the water,,

remember its better to hit the ground at 10 feet then it is at 100 ft.. dont get crazy, just lift it off the ground and see how it handles after the change.

also do ONE THING AT A TIME, its a process of elimination .
- Geert Pirens > Rodney Johnson December 4, 2014 at 12:36pm
  
  I wil try again as soon there is no wind, mabe tomorow and change the values as they where before and execute an AutoTune again and see what that brings.
  
  If I add a second battery (2x 5000mAh) do I have to AutoTune again?
  - criro1999 > Geert Pirens December 4, 2014 at 3:52pm
    
    Usually I have 2 sets of PIDs param after Autotune, with one or two battery.
    
    Sure weight will influence the param, so yes, try to keep 2 version of your param.
    
    Just save them after each fly with 1 or 2 batteries.
    - criro1999 > criro1999 December 4, 2014 at 3:54pm
      
      Also not a good idea to Autotune with an active gimbal. I am blocking the gimbal free movement when doing Autotune.
      - Geert Pirens > criro1999 December 5, 2014 at 5:56am
        
        Aha, my gimbal was active during AutoTune !!!!
        
        Schould I power off the gimbal and just put the camera on it for the weight?
        
        Please advice me on this.
        
        criro1999 > Geert Pirens December 14, 2014 at 6:39pm
        
        I did power off both camera and gimbal, and I did block the camera on a fix position with some rubber. or use some weight (me I am using an old Lipo with the same weight as GoPro)
        
        JHIN > Geert Pirens December 5, 2014 at 6:53am
        
        Have a look at my previous answer, please... "If you have a gimbal mounted it should be removed before attempting AutoTune, or at least secure all moving parts so nothing is hanging loose."
        
        Instead of the camera you may want to put on something less valuable with the same weight during AutoTune and testing...
        
        -Jan
        
        Greg > JHIN December 14, 2014 at 8:56pm
        
        Interesting idea. I have A Tuned with an active gimbal and camera with no ill effects. It will be there when I fly so I am not certain why I wouldn't want it there when I tune?
        
        JHIN > Greg December 14, 2014 at 11:53pm
        
        I had the same thoughts - then I saw this from the developers: http://diydrones.com/forum/topics/ac-3-1-autotune-support-discussio...
        
        -Jan
  - Kim Ferady > Geert Pirens December 4, 2014 at 3:18pm
    
    Hi, you should have the "lock pitch and roll values" box ticked in the second screen shot.
    
    Your pitch and roll PI's should normally be the same. Rate roll and Rate pitch shouldn't be much higher than about 0.2000.
    
    You can enter your original numbers in the respective boxes and hit "write params".
    
    Then I suggest you read the Ardupilot wiki "roll pitch tuning"...
    
    http://copter.ardupilot.com/wiki/ac_rollpitchtuning/
    
    That will explain everything better than I can!!
    
    Cheers!