Disarmed by lowest throttle stick position

Pixhawk
1

Hello all,

I’m flying a quadcopter with stabilized mode.
I’m experiencing that the quad copter is disarmed by lowest throttle stick position for several seconds.
Is it a default setting? If so, do you know the reason for that?
If I don’t want that setting, how could I change it in QGC?

2

this seems to be the recent px4 firmware behavior. Probably good for beginners, but really confused experienced pilots.

3

There are different things you can configure, like auto-disarming or the use of an arming switch: https://docs.px4.io/master/en/advanced_config/prearm_arm_disarm.html

4

Thank you very much for your verification. I think if I have a option to deactivate the throttle stick lowest position disarming, that’ll be helpful. But, so far I cannot find how to change it.

It seems that the auto-disarming is for the disarm after landing as described below.
“COM_DISARM_LAND: Time-out for auto disarm after landing. Default: 2s (-1 to disable).”

But, even before landing, if the throttle stick is at the lowest position for several seconds, the quadcopter is disarmed. So, I think this is different from the auto disarm mentioned in the page (Redirecting to latest version of document (main)).

5

Correct, there is now also COM_DISARM_PRFLT

6

Thank you for your reply.
I looked at the default vale for COM_DISARM_PRFLT. It’s 10s.
But, if the throttle stick is at the lowest position for several seconds less than 10s, the quadcopter is disarmed.
So, it seems that different setting disarms the quadcopter. I don’t know what disarms the quadcopter.

COM_DISARM_PRFLT: Time-out for auto disarm if too slow to takeoff. Default: 10s (<=0 to disable). (https://docs.px4.io/master/en/advanced_config/prearm_arm_disarm.html)