My Phantom not holding altitude

[daylott]

Hi All

Ive got a bit of a problem with my Phantom, it dose not seem to be holding its altitude very well it keep lowering down slowly it dose settle down after the battery has drained down a bit also it keep telling me its -600 ft this seems to change from -600 to +600 i have to restart it a couple of time and then it ok.

 

[flyNfrank]

Calibrate the IMU, then the compass.

Btw, do you have any mods done to the quad? If so what?

 

[daylott]

hey thanks for the reply , Ive tried calibrating the IMU & compass and it don't help and nope no mods on my phantom

 

[flyNfrank]

hey thanks for the reply , Ive tried calibrating the IMU & compass and it don't help and nope no mods on my phantom

What is the IMU read out in each of the 3 sections?

And what method do you use to calibrate the compass?

 

[daylott]

i use the method thats in the book for calibrating the compass.

here is the IMU read outs

 

[justin00]

Probs not this seems you mention -600ft, but ~400ft isn't the limit on the "limits" page ?

 

[daylott]

dont ask lol have no idea what is wrong with the thing think im going to throw the thing out the window so annoying

 

[GeoChan]

Front window or back ,so i know were to stand

 

[daylott]

don't think you would want to catch it i would throw it pretty hard lol

 

[daylott]

so guys any ideas what wrong with my Phantom ? or do you thing i should send it to DJI or somthing.

 

[Panamon Creel]

IMO it sounds like an barometric pressure sensor fault, you should contact DJI with this.

 

[paulajayne]

Iffy connection? unplug and re-plug it.

 

[kxkraze]

Sounds like a barometric altimeter malfunction. I'm still pretty new to this myself but maybe one of the veterans can chime in if that's a possibility.

 

[Panamon Creel]

Iffy connection? unplug and re-plug it.

The barometric sensor is integrated into the Naza-M conroller, no connections to plug or unplug