Servers by jDrones

Emergency motor shutdown without it setup

(Charlie E) #1

So I was flying about 10ft off the ground and all the sudden my quad dropped like a rock. The log had a message that stated “Emegency Shutdown All Motors”. How can this occur without setting it up?

(Hosein Gh) #2

without data flash log its very hard to the reason
please send logs of this flight

(Charlie E) #3

I will post the logs this afternoon. In the meantime what could trigger such an event?

(Charlie E) #4


(Hosein Gh) #5

it seems that you suddenly lost the power in air because your FC didn’t record any data of crash and altitude losing after motor stops

check battery cable and socket , power module and ESCs

(Charlie E) #6

Not sure how that could happen I have 2 power systems and backup on the servo rail?

(Hosein Gh) #7

Its most of the time happening from battery and connectors

(Charlie E) #8

Do you see any other potential probs? Motors being under powered?

(Shawn) #9

Whatever supply you have connected to the servo rail is more stable and shows a better voltage level than your main supply (Vcc) - I’d look at swapping them.
Maybe you suffered a brownout because of that main supply (Vcc) because there’s a power safety flag that is changing (getting worse) but I’m yet to find and read up on it’s details and true meaning.

(Hosein Gh) #10

no motors doesn’t under powered

(Charlie E) #11

What tool are you guys using to analyze the log files?

(Hosein Gh) #12

i’m using APM planner

(Charlie E) #13

Thank you! The APM Planner log viewer is 100x better than Mission Planner!