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Today hexacopter crash

Posted by Josef Míka on February 9, 2014 at 1:28pm

Today I make first flying test on HAL hexacopter. In stabilize mode everything is OK but ALThold and loiter mode dont work. I analyzed telemetry log and throttle is average on 70 %. It can be reason ? I have two 3s 4000mAh and  NTM 2836 750 KV motors, 12x4.5 props.

there is video 

http://youtu.be/OC-f3Wq4sbc

Thanks

Josef

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Replies

  • T3
    Richard Boyhan February 10, 2014 at 7:19am
    First having to use 70% throttle to maintain altitude is not good. It does not leave you much room on the upper end of your throttle. You need to lighten the weight on your copter. I'm guessing when you try altitude hold or loiter your copter falls? You need to make altitude hold work before trying loiter or auto. They both use altitude hold as a bases to function. To fix altitude hold you need to change THR-MID parameter to match your throttle position for altitude hold. You should check the wiki manual, it's actually pretty good.
    • Josef Míka > Richard Boyhan February 10, 2014 at 8:13am
      Richard, thanks a lot for your reply. I choose another solution. I ordered 4s batteries instead of 3s what i use now. I think that will be better for throttle range. Maybe. What you think about it? When i tested althold mode hexacopter slowly climb up without limits.
      Best regards
      Josef
      • T3
        Richard Boyhan > Josef Míka February 11, 2014 at 7:40am
        Ya, 4S battery should help give you more power. Good luck.
        • Josef Míka > Richard Boyhan February 11, 2014 at 7:57am

          Thanks. After testing let you kow.

          Josef

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