Hi DJI,

There is a serious bug/issue with the DJI FPV drone.
It happens when you go into landing while in normal mode and then when the drone touches the ground if you would accidentially move the sticks to fast to arm/disarm the drone becomes an UNCONTROLLABLE object spinning around on the ground and moving into us and everything around it. The dangerous part is that it NO LONGER receives ANY input from the controller and just keeps doing this untill it either flips upside down or just drains the battery completely which can take a while. This is a serious issue you need to adress quick because it was very dangerous. The fact that you can no longer control the drone or disarm it in any way is a serious bug/issue. The props are also completly demolished when this happend apart from the scratches around the drone.

The drone flies good apart from that and if you land in manual nothing bad happens and if you just land in normal and dont touch anything everything goes fine.
But the fact that there is a possiblty your drone becomes and upredicabtle saw blade spinning on the ground not responding to any input is something you really need to adress quick.

Hope you listen to this feedback and can help save someones drone and/or fingers,legs,pets etc.

Kind regards,

Bob

this is not an issue. Once on the ground just pull the throttle stick down and wait for the motors to stop. This sticks down in is only for starting of the motors and for emergency. It has already been discussed here somewhere ...

tomekyo Posted at 5-20 11:02
this is not an issue. Once on the ground just pull the throttle stick down and wait for the motors to stop. This sticks down in is only for starting of the motors and for emergency. It has already been discussed here somewhere ...

Well dont mean to sound to rude, but if you think it's not an issue that there is a possibility a drone can get rouge and uncontrollable and becomes a danger to everyone around , then i would say you dont understand the safety risks this enposes. A normal FPV drone can be disarmed at any time to prevent props cutting things/people, the fact that the DJI FPV drone even allows this to happen and not be disarmed is a safety risk that needs to be adressed.

I understand you can prevent this by not touching the sticks, but if someone doesn't know and touches the sticks a bit to soon after the drone has landed and you get this issue. Its clearly a safety issue  and to make it clear, the main issue is you cant control it anymore, Not even turn it off, which at any point you should in terms of safety. But its even better to prevent that this can happen in the first place.

Bob

Yonderbob Posted at 5-20 11:31
Well dont mean to sound to rude, but if you think it's not an issue that there is a possibility a drone can get rouge and uncontrollable and becomes a danger to everyone around , then i would say you dont understand the safety risks this enposes. A normal FPV drone can be disarmed at any time to prevent props cutting things/people, the fact that the DJI FPV drone even allows this to happen and not be disarmed is a safety risk that needs to be adressed.

I understand you can prevent this by not touching the sticks, but if someone doesn't know and touches the sticks a bit to soon after the drone has landed and you get this issue. Its clearly a safety issue  and to make it clear, the main issue is you cant control it anymore, Not even turn it off, which at any point you should in terms of safety. But its even better to prevent that this can happen in the first place.

maybe you can read the instructions and if you follow those carefully you probably will survive and also the people around you. One of very important things when safety is concern is knowing your stuff and trying to predict it's behaviour. The feature you mention is not meant to be used in the way you're trying to but it does not make it into a problem or a design fault ... personally I'd call it ignorance or lack of experience ...

tomekyo Posted at 5-25 12:56
maybe you can read the instructions and if you follow those carefully you probably will survive and also the people around you. One of very important things when safety is concern is knowing your stuff and trying to predict it's behaviour. The feature you mention is not meant to be used in the way you're trying to but it does not make it into a problem or a design fault ... personally I'd call it ignorance or lack of experience ...

I'd call it ignorance to assume i didn't read the manual plus not realising my point which is having a DRONE not RESPONDING to any input. INCLUDING DISARMING. i mean if you are really that ignorant to avoid the actual point at hand then you should be banned from flying all together as you will be a danger.
Like with any human operated machine, anyone can make a small mistake, just look at the daily trafic. Now in those situations you can CORRECT any mistake you made  to avoid dangerous situations. and let's be real everyone is human and can make a mistake, but it's how you correct that mistake is whats important. Now imagine having a car that does not respond to you hitting the brake....
I hope I don't need to say more. This is what is the problem with the FPV Drone. So I hope for your sake you actually understand the issue at hand now and not ignorantly avoid the actual point at hand here which helps no one avoid this issue.
plus what i descirbed is NOT a feature, it's a flaw within a feature that should be fixed. Do you actually even fly FPV? where when you are ripping it you will constantly try and correct mistakes to avoid crashes via wrong inputs or turbulence or w/e reason. The simple fact is your DRONE should RESPOND to your inputs no matter what.

So still DJI needs to fix this!

Bob, can you describe the arm/disarm accidental stick movements you are talking about during landing? I’m not sure I follow.

I’m literally 1 month onto drone ownership, this is my first, and I’ve not had any issues or the ones you describe. When I land, in normal mode, I just hold the throttle down, it lands and shuts off. Easy!

He is trying to force the drone down, rotating around the axis to the right, while flying backwards and banking left.... expecting it to land.

The landing procedure is simple, just hold down the left stick until it touches the ground and it will then shut off once safely landed.

The "arm" procedure, or "turn on motor" procedure, whichever way you want to call it, is NOT the procedure for landing. It's only for take off.

Ramphex Posted at 5-25 13:36
He is trying to force the drone down, rotating around the axis to the right, while flying backwards and banking left.... expecting it to land.

The landing procedure is simple, just hold down the left stick until it touches the ground and it will then shut off once safely landed.

It is not landing that causes it. It is after its landed but before the motors turn off. If in that small window you touch the sticks the wrong way you get an uncontrollable drone for 2 min.

And Ramphex again.... the issue is not that it moves weird, it is that its not responding to any input, no disarm, no shut off, no take off nothing. This should not be a state the drone should be allowed to be in PERIOD, no matter what small error input you do.

tomekyo Posted at 5-20 11:02
this is not an issue. Once on the ground just pull the throttle stick down and wait for the motors to stop. This sticks down in is only for starting of the motors and for emergency. It has already been discussed here somewhere ...

No matter what he is doing wrong, if there are conditions when drone doesn't respond to disarm command it's a critical bug. The only case when it may be allowed - when RC module is damaged, but in such case failsafe should be triggered and drone should stop any motor movement.

Would you be able to get a video of this for future reference? I feel as I have not heard of this issue before.

Ramphex Posted at 5-25 14:03
Would you be able to get a video of this for future reference? I feel as I have not heard of this issue before.

The thing is I could record a video, but I do not want to enforce it anymore since it is very dangerous and scratches up my props and drone. I would have to find a way to keep it safe somehow.

I had the exact same issue today.
I accidentally crashed the drone in manual mode, panicked and put it back in normal mode then it just started going off like crazy and wouldn’t stop even when I tried to disarm several times.
Fortunately it landed on its head and just powered in to the ground.
After I picked up the Drone I tried to stop it by turning off the Battery, that also didn’t work so I just unplugged the battery to stop the drone.

The Drone flew fine after all that and had no issues for the rest of the day.

I think it is a bit negligent that this issue is still not fixed five years later.