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Insta-flip problem


(Anton Pryamostanov) #21

This is calibration issue.

You need to install spring to your Taranis controller left stick and re-calibrate both radio and ESCs

Likely the radio did not properly calibrate due to incorrect throttle center position.

Generally for drones you need to have spring on the left stick to keep it centered. This needs to be fixed.


#22

Install a spring? I am a beginner. I dont know what a spring is in the context of this conversation


(Anton Pryamostanov) #23

Did the box with the Taranis have a small metal spring (similar size to spring inside ball pen)?

It comes together with a small plastic lever.

Both these parts are installed into the left stick to keep it positioned in the middle.


Its a very easy job, I done it with no issues on my Radio TX.


#24

I configured the radio setup via qgroundcontrol. I followed the instructions pretty well


#25

btw I should mention that the esc uses an oneshot protocol and I dont know if that plays a factor in this. I am also running ardupilot 3.5.5. Here is a video of me configuring it:

And then I configured the ESCs afterward and the problem persisted


(Anton Pryamostanov) #26

The instructions are based on assumption that left controller stick is in drone mode (with spring installed).


#27

I have seen videos of people configueing it without a spring. And what is drone mode?


#28

here is a video from qgroundcontrol:

from
https://docs.qgroundcontrol.com/en/SetupView/Radio.html.

There is no spring in the video


(Anton Pryamostanov) #29

Actually I have same sensitivity behavior as in your first video after some flights after initial calibrarion.

Does it affect your flying? Drone should keep altitude at 50% throttle, so low throttle sensitivity can matter less, mid throttle should be responsive.


(Anton Pryamostanov) #30

I will record some video and experiment with calibration tomorrow.


#31

yeah it immediately shoots up into the air. I mean it doesn’t even hover. It either flies up directly or falls down. No in between. I tried messing with the trims to see if that did anything, but it didn’t.


(Anton Pryamostanov) #32

Which mode you use when arming? Stabilize?


#33

yeah


(Anton Pryamostanov) #34

How do you arm? Throttle down-right for 5 seconds, then throttle down-center and slowly increasing?


#35

yes


(Anton Pryamostanov) #36

I think this is 100% radio or ESC calibration issue.

Let’s wait for answer from people analyzing bin log in other thread.