phantom 2 vision plus altitude showing - 30 feet on the ground

[stang10189]

altitude showing -30 feet on the ground. I have updated all firmware, preformed a advanced IMU calibration and then calibrated the compass. This was my first flight. Any suggestions on how to fix this? I am worried about RTH when it thinks its at -30ft when on the ground. Worried it wont goto the hight I set in the app and end up hitting something durring RTH. Thanks in advance.

 

[Rotorfreek]

A few factors at work here... It uses a combination of air pressure and gps to calculate altitude. Have you tried it on another location? And as long as it also shows -30 when it records home, you're okay.

Try it by hovering at 6' then putting it into failsafe - you will see the height it will assend to.

Sent by my thumb, a trusty slave to my crazy mind. The above is the ramblings of a lunatic, and should be treated as such. Terms and conditions apply.

 

[stang10189]

Will try that thanks