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Failsafe en auto mode

Posted by Max Patissier on October 12, 2014 at 7:26am

Hello everyone

2 accidents today and maybe same (human) error.

I was trying long auto mission - 2 km from home - and for all the 2 missions, when the drone is going back, I get an RTL and a stabilize and the drone fall.

I have un TX9 XR + RX Frsky and failsafe with RTL engaded if failsafe. (apm2.6 3.2rc10)

I read :

  • Continue with the mission – if you are in AUTO mode and have set the Failsafe Options to “Enabled_continue_in_auto_mode”. ----> I set this mode
  • If the failsafe clears (throttle climbs back above 975) the copter will remain in its current flight mode. It will not automatically return to the flight mode that was active before the failsafe was triggered. This means that if, for example, you are flying in stabilize mode when the failsafe is triggered, and this causes the flight mode to change to RTL or LAND, if you wish to re-take control of the copter you will need to change your flight mode switch to another position and then back again to Stabilize.

Does it mean that in auto mission, if failsafe is engaded, it switch by default to stabilize when It get back and the failsafe is de-engaged.

Thank you

Max

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Replies

  • Max Patissier October 13, 2014 at 12:35pm

    I found my error. Better to say that for others before making the same.

    I started my 3 flights using Droidplanner - works great - Arm + TakeOff + Auto, putting on my RC only to pass the RC arm check.

    That´s why when the failsafe was desengage, the flight mode was the TX one, ie Stabilize, not the droidplanner AUTO mode....

    And it's happened only far from home for sure....

    Hope it can help.

    Max

    • Todd > Max Patissier October 14, 2014 at 2:01am

      are you saying the radio loosing connection is forcing rtl & not the auto mission?

      I was thinking that one would have to disable failsafe on the radio if it lost connection for those longer auto missions. Just my thoughts

      • Max Patissier > Todd October 14, 2014 at 3:47am

        the radio loosing connection is forcing rtl.... yes, normal because it was my configuration... BUT when it get back connexion, it  put the APM in his (the TX) initial mode, ie STRABILIZE and because the throtle was =0, it fall.

        But, better that because if the throtle was at 50% or more, it would jump to the air...

        so, WARNING, be careful when using droidplanner, auto mode and TX failsafe. Could be incompatible.

        I will for the next (long) flight use my TX to set it en auto mode and use droidplanner only as telemetry monitor.

        • Todd > Max Patissier October 14, 2014 at 3:57am

          Thanks Max,

          It seems to me that for long & auto flights, TX failsafe should be turned off. Effectively the same as what is done in APM settings.

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