BF 4.4 gps rescue premature disarm in descent phase #12322
Replies: 4 comments 3 replies
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If your altitude readings are accurate, you can lower the gps_rescue_landing_alt parameter from 4m to 2m or so. This setting is the threshold where disarms become possible. If your descents are smooth, your issue may be tune (or wind) related. A loosely tuned or shaky quad (lots of dterm activity) will be more prone to early disarms than one flying smoothly and descending smoothly. If your descents are not consistent in rate when it enters the landing heights, gps_rescue_throttle_p, i, and d can be adjusted in BF lua or osd under failsafe settings. I believe KarateBrot is working on new code for the landing detection for the future. Another idea I have is having the accel threshold be dynamically less sensitive starting at landing_alt, increasing in sensitivity the closer it reaches 0 alt. Hope this helps. |
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Thanks for the suggestions : the quad seems pretty stable and smooth during the descent. |
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Did you fix the issue? I also experience this. |
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With the variable gps_rescue_landing_alt set to 2 meters and some other changes in settings it worked sometimes.. |
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Yeah after hours of research. It might be a bug on m10 chips. Because on my m8, 5 inch quad, it lands correctly even counted the landing time goes beyond 10 seconds. No drops. I guess the safest way is to just manual control when it's a few meters away from homepoint. |
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Hey folks, i also experience the same issue in my Betaflight (Firmware version: 4.6.0), when my quad is in GPS rescue mode, while it is landing from 10 meter altitude, somewhere around 1-2 meters from the ground, it automatically disarm itself! (crashed) even though i didn't move my transmitter sticks ( all remains in same mode ) |
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Same issue here! Kind of annoying. Broke an arm with this… |
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When testing gps rescue with the stable 4.4 release I keep getting premature disarms during the descent phase.
Quad drops like 2-6 meters.
I get stable altitude readings with more then enough sats, like 20 or so.
But altitude is like 6 meters below sea level, not unusual in the Netherlands ... ;-)
Is that the cause, or what can be. Anyway; is there a parameter I can change to fix this ?
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