[DocHardinger]

Salve everybody,

im using a Revolution board with Complementary mode.
Quadrocopter F450 like.
5000 mAh 3s LiPo (maybe a little bit heavy but installed near the middle of the frame)
2213-915kv motors with 10x4.5 props.
30Amps ESC´s.
Revo board installed 40mm above the frame (for getting the MAG working when motors are running)

Everything is calibrated fine.(Also Mag and GPS installed and calibrated but not in use(Complementary mode))
Board level is okay when standing on flat ground.
ESC´s are calibrated.
On scopes i can see that Accel Z is at -10m/s^2. But I think thats normal??
Attitude Roll and Pitch are stable in scopes.

Now my problem:
When i try to take off the copter always wants to roll left.
If i correct it with transceiver input by myself i can get the copter into the air and there it hovers stable without any input.
But as soon as i land and then try to take off again i got the same problem.

Anyone got an idea?

[hawkview]

If it hover fine without input in the air than its down to you taking off to slowly, you went to take off more quickly, when you take off slowly the revo is trying to keep it level but it can't so it adds more correction.

[DocHardinger]

  ups okay my fault.

thx for your reply

[DocHardinger]

I just tried to take off quicker but then the copter takes off with maybe 10 degrees roll left and seems to hold this angle.
If i then correct it with manual input and then release all sticks it hovers stable...

Thats a little strange... Another idea?

[jtrout19]

What kind of transmitter are you using? Maybe a deadband issue?

[DocHardinger]

Its an Spektrum DX6i with receiver and satellite connected over normal PWM input.
But yes that was also my thought, i looked into transmitter configuration and all sticks are centered. All "special modes" in trasnmitter are off.
And i tried to adjust the deadband in LibrePilot also. By the way its Firmware 16.09 RC2.

I just add a screenshot from the Accelormeter values...thats when im starting the motors...maybe thats a problem??? too much vibrations? But then it will not always be rolling to the left or am i wrong?

[DocHardinger]

Oh man it was just so easy....
your first idea was right @Hawkview.
Its taking off so slow because of its weight and so the Integral is rising and rising and I think also when arming and doing nothing it will rise.
So all i had to to was to mark the little option "Zero the Integral when throttle is low" in the Basic Stabilization tab, thats it.

So thx everyone for your help. Now i can continue getting Altitude Hold to work ;-)

[jtrout19]

I had that issue as well but my quad didnt want to flip. Just took off really violently. Glad you got it solved though.

[vgwit]

Could not find "Zero the Integral when throttle is low" in the Basic Stabilization tab.

[hwh]

Could not find "Zero the Integral when throttle is low" in the Basic Stabilization tab.

What version of LP are you running?

[vgwit]

Sorry, did not pay attention on scrolling :-)

[hwh]

Sorry, did not pay attention on scrolling :-)

It pretty well hidden down at the very bottom.  It's easy to miss.