Hexa crash after watchdog reset

ArduCopter Copter 4.0
1

Hexacopter with pixhawk4 mini, arducopter 4.0. Frsky 2.4GHz link. I fly in auto mode. To have good view I was control model from window on second floor my house. When I seen that RSSI was low I change mode to RTL and when model was about 600m from home I go down to go ouside to land. During This time I loose RF signal. When I was outdoor I see that model fall down. On radio last message from telemetry was “Forcing safety off for watchdog”
frsky
There is to log:


First was cut just before crash and second started during fall down.
Second log is long because pixhawk logs till I found model and switch off.
I wonder what was happens.

Piotr

1 Like
2

@pedro72,

Thanks very much for this report. We’re investigating as a top priority and we think this could be an AP software issue (but we’re not sure yet).

3

Many thanks for your bug report! I believe I’ve found the cause for this issue and there will be a patch for 4.0.1rc2.
This bug also explains why some people get garbled status text displayed with FrSky telemetry.

4

Critical issue? Is it safe to fly latest 4.0 version?

Nevermind, already found Copter-4.0.1-rc2 available for beta testing -- Critical Fix Included

5

Thanks for very quick solution.

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