Horizon mode pitch flips mix in roll (full acro works as expected).

[Felixrising]

Conditions:
pid_controller = 1 (old school pid controller not tested)
horizon mode enabled
flip forwards or backwards

Expected behaviour:
Pitch flip should finish with pitch axis horizon "help"

Observed behaviour:
Roll is mixed into the flip instead of just pitch.

[the-kenny]

I think I saw this behavior a few months ago (e.g. on the old pid
controller), but I can't say for sure if it's the same issue.

On Tue, Nov 26, 2013 at 1:49 AM, Felixrising notifications@github.comwrote:

Conditions:
pid_controller = 1 (old school pid controller not tested)
horizon mode enabled
flip forwards or backwards

Expected behaviour:
Pitch flip should finish with pitch axis horizon "help"

Observed behaviour:
Roll is mixed into the flip instead of just pitch.

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[lit1088]

In angle mode, before fly ,I have do accelerometer calibration, in few minutes ,the roll and pitch will drift. what is matter?