Will not hold altitude

[Rik18]

My P3 Standard will not hold altitude. I use the app to launch it and it would originally hover at about 4' AGL.

I changed the blades to the DJI 9450 and it will start to sink to the ground if I do not interfere with the sink rate.

When I fly it around and want to hover at a spot it will start to sink as well as osculate around in a circular pattern as it sinks.

Are the new blades responsible for this behavior?

I have also added the propeller guards and this has not made any noticeable difference.

Confused...

 

[kromar]

Did you calibrate compass ? Is IMU calibrated ? Just a guess I’m fairly new to this. Good luck.

 

[Mark The Droner]

I've never heard of props causing this problem. Could you hover it at something like 20' and get back to us on how well it holds? Generally this is solved with an IMU calibration. Good luck.

 

[Fly Dawg]

Easiest way to find out is put your old props back on, assuming they aren't damaged. That will tell you one way or the other before you try and IMU calibration.

 

[Rik18]

Ok what is an IMU calibration?

How is it performed?

 

[Rik18]

Easiest way to find out is put your old props back on, assuming they aren't damaged. That will tell you one way or the other before you try and IMU calibration.

Old props are history

 

[Fly Dawg]

Ok what is an IMU calibration?

You really should do some research, but try this:

 

[Rik18]

I ran the calibration.. Indoors as it was the only level place I could easily setup....

It still wanders in a circular pattern and it still sinks. At 20' it will up/down from 16' to 20' and start to creep rearward...

??????

 

[elarryland]

I would calibrate the remote next.

 

[Rik18]

I would calibrate the remote next.

How... ??

 

[captainmilehigh]

From my experience with my Standard, I had a poor IMU calibration inside as well.

Took the bird outside to an open, level area (on a small plastic table) and did the IMU calibration there. Once completed I powered down the bird, r/c and app and restarted each normally. Since then, no issues. Don’t know if being outside had anything to do with the successful calibration, but it behaves itself now. Good luck!

 

[Rik18]

From my experience with my Standard, I had a poor IMU calibration inside as well.

Took the bird outside to an open, level area (on a small plastic table) and did the IMU calibration there. Once completed I powered down the bird, r/c and app and restarted each normally. Since then, no issues. Don’t know if being outside had anything to do with the successful calibration, but it behaves itself now. Good luck!

I didn't try to power it down... I flew it off right after the calibration was complete...

Let me try this

 

[captainmilehigh]

I didn't try to power it down... I flew it off right after the calibration was complete...

Let me try this

Yeah, I had to power down and restart or it wouldn’t ‘take’. Kinda like restart after a computer update.

 

[RodPad]

How... ??

Search Results for Query: calibrate remote | DJI Phantom Drone Forum
It is in the manual,

If you playback your flight log in DJI-Go there is an option to show your stick movements, there you can tell if your remote is sending stick down when it shouldn't be.

Rod

 

[Rik18]

Restarted it and it sinks.. Doesn't seem to osculate in as large of a circle but it sank down to about 5' from 20' and on the app it says it's 18' AGL so it apparently doesn't know it's sinking..

 

[Rik18]

Search Results for Query: calibrate remote | DJI Phantom Drone Forum
It is in the manual,

If you playback your flight log in DJI-Go there is an option to show your stick movements, there you can tell if your remote is sending stick down when it shouldn't be.

Rod

Looked at the playback and it shows 16.4' AGL where as when it was in the air it show'd 18' AGL. The controls are not showing any input to the drone...

Thanks,

 

[LarBear360]

Restarted it and it sinks.. Doesn't seem to osculate in as large of a circle but it sank down to about 5' from 20' and on the app it says it's 18' AGL so it apparently doesn't know it's sinking..

Just to be clear, nothing is touching the left stick?

 

[captainmilehigh]

Suggest you do RodPad’s suggestion in post 14 and check the r/c calibration next. Mine might wander a bit due to occasional breezes or crosswinds, but it doesn’t ever drop altitude. Something is making it lose altitude somewhere.

 

[Rik18]

Just to be clear, nothing is touching the left stick?

Correct.. I sat the controller down and let it hover on down.. I'm literally 6' from it

 

[LarBear360]

Correct.. I sat the controller down and let it hover on down.. I'm literally 6' from it

10-4. I saw a post awhile back where the guy had the same issue. Tried hovering without his mobile device. No app. And it hovered just fine. He was not sure what the app had to do with it, but it worked. He re-installed GO and all was well.