Hi,
I am trying to setup my copter but at take-off in stableized mode it keeps rolling left. I leveled the copter, calibrated the compass and callibrated the RC. Still it keeps rolling (lifting only at the left side). What might be a reason for this?
There are not enough information of your system and your issue.
Is this a new copter which never been flown before, than it could be an configuration problem (motor order - rotation of motors)
Allways best is to send a LOG.bin of the issue.
Yes, the copter is never flown I do try to do a first testflight. Motor spin direction is checked repeatedly, propeller mounted correctly. Attitude is shown level over telemetry, GPS has fix.
The logfile seems to be to big to paste here. https://www.dropbox.com/scl/fi/rynhvop2mxzqgcumr0wjh/00000037.BIN?rlkey=qj2h102ioxrflz3y8l0osdr34&st=o7wwfmqh&dl=0
Are the Rc trims centered?
as I said, RC callibration has been done, after that no further trimming.
You still have not answered the question: Are the RC trims on the RC transmitter centered?
Ok, I think I made a bit of progress: Whenn I turn the copter yaw 90° before takeoff, it will roll on the pitch axis on the same spot. Maybe it’s just over correcting a minimal slope of the ground? However I do not understand why it won’t stop. From what I understand, Board and compass orientations are aligned and set correctly (no rotation, just facing forward). Can this be verified using the logs?
Regarding Trims: I do not see the trims on my remote as there are no sliders but this switches for trimming one step at a time. I never used them.
Confirm correct motor order and direction with Mission Planners Motor Test?
Connect ESC’s and Motors
And understand which motors should spin when you press the A-D buttons?
Yes, The copter is an X-quad and wired/tested according to the diagram on this page, 1=A, 4=B, 2=C, 3=D.
Currently the copter sits on feet ~1R of the props above ground. Could ground effect be the reason for or contribute to this behavior of a copter sitting on the ground with one side, the other in the air?
It can he confirmed in Mission Planners HUD. Is the artificial horizon correct when you pitch and roll the craft?
What Flight controller is it?
Horizon apears level, ±0.5° on room floor. It is a Cube Orange FC.
Not what I asked. But, it’s hard to get a Cube wrong. Look like this?
Roll right (left side high):
Pitch down:
Sorry, I missunderstood this. Yes it does and reacts as I would expect it.
Roll copter left → Horizon turns clockwise
Pitch copter up → Horizon sinks down
Turn around yaw CW → Compass moves CW
Well, if you are sure of the motor order and direction and the attitude in the HUD is correct as shown, and a Radio Calibration has been done with trims centered, then give it more aggressive throttle on take-off to get it off the ground. If it still flips then it’s still something fundamental.
Then post a link to that log.
Describe the components on this craft and it’s take-off weight.
1 Like