CC3D flips after crash

[MattyC]

Hi all,

I have now had a few instances where after a crash my quad tries to flip onto its side. I know the props and motors are correct because it flew OK before the crash.

Does anyone have any ideas?

I have been thinking of changing to a naze32, but I will see if I can fix the cc3d first.

Cheers

Matt

[MattyC]

Also for the same throttle level the quad won';t always stay at the same height, I am not sure if this is normal.

[F.P.V. Aaron]

Hi mate, You might need to recalibrate Your radio settings in the op ground station ( stick movements ) , You can also check your gyros health on the op ground station. Let me know if that helps?

Cheers...Aaron

[GdLookinMingeR]

Also for the same throttle level the quad won';t always stay at the same height, I am not sure if this is normal.

Due to power use
the same amount of throttle input may not be the same
as the full input at 1 min as the same input at 6 mins.

Reason I say that is 5 mins seems like nothing when your having fun
listening to the alarm after 3 mins wondering what its on about
i just got it in the air feeling!

Hope that makes sense.
Jay

[MattyC]

The change in height happens at any time during the flight. I will check the fc on ground station when I get some time. The problem only really happens after a crash it is like it knock the gyros out. The crashes I have aren';t that hard, the last one i killed the power and it fell into a bush, no broken props etc.

[arturios]

It';s cause the CC3D does not have a barometer. Your stick (throttle) control and you make up the barometer. Other more experienced pilots here helped with that bit of knowledge and it';s helped. As to the flipping, that may be a sign that there';s not enough power to lift the quad off the ground, like GdLookinMingeR stated.



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[james]

It';s cause the CC3D does not have a barometer. Your stick (throttle) control and you make up the barometer. Other more experienced pilots here helped with that bit of knowledge and it';s helped. As to the flipping, that may be a sign that there';s not enough power to lift the quad off the ground, like GdLookinMingeR stated.

Yeah, CC3D does just attitude stabilisation, not position/alt hold. Look to APM or similar if you want full position+alt hold.

The flipping - you say after a crash, are you sure that none of the motors or props suffered damage? Motor damage isn';t always visible, but you can feel it in excessive movement if you try to rock the casing (bearing damage, at least). Sounds like you might be pretty marginal on weight/mass, in any case.

[MattyC]

Hi all,

Thanks for your replys, i have checked all the motors, there is no free play in them and they all turn with about the same amount of force applied.

i have checked the settings on the board and they all seem ok, so i recalibrated the transmiter inputs.

i turned off the setting that zeros the gyros when arming the aircraft incase that is throwing up some problems.

just need the weather to improve so i can give it a test.

Cheers

Matt

[arturios]

i turned off the setting that zeros the gyros when arming the aircraft incase that is throwing up some problems.

I have thought of that but avoided switching it off. Instead I plug in the the battery and wait approximately 30 seconds for the gyro to stabilise before arming. Does the trick! ::)

[_SYC_]

I was having an issue where following a crash the quad wouldn';t hover like before, had to re level in the field using the GSC on the laptop and it was fine, seemed the bump messed with the gyro.
Also found tha one of the mounts for the board had snapped so whilst firm with the other 3, in a crash it would let the board move.
Hop that helps.

[Oakley]

If it';s any help, I had some trouble keeping my CC3D level after I ditched it into the ground, i had to clear the firmware and run through the setup again to get it working as a simple level calibration didn';t work.