LibrePilot Forum

Users => Vehicles - MultiRotors => Topic started by: nikugoenkar on April 17, 2019, 09:10:48 am

Title: cc3d Quadcopter shows automatic rotation in flight data when stationary
Post by: nikugoenkar on April 17, 2019, 09:10:48 am

Hi, I am new to building quadcopters. I got a kit from amazon(huge mistake) and just finished building one but I am facing alot of issues regarding its flight.
Here are the specifications:
Frame- F450
Motors- A2212 1000KV
Flight control board- CC3D
ESC- 30A
Transmitter - FlySky FS-CT6B

Every time i fly it in attitude mode somehow the calibration goes off and i have to recalibrate it again. Doesnt happen in rate mode.
Here are two pictures which shows the problem.

Title: Re: cc3d Quadcopter shows automatic rotation in flight data when stationary
Post by: TheOtherCliff on April 17, 2019, 06:47:34 pm

Not sure what you mean by "calibration goes off"...

There are some things you should know:
- It's important that the trims be where they were when you did the transmitter wizard part of setup.  With battery plugged in, USB plugged in, transmitter on; in GCS go to Input page.  Make sure that your transmitter roll/pitch/yaw trims are set so that the sliders that show the stick positions are sitting on the neutral number (maybe bouncing a little above and below).  Leave the trims there.  Period.
- After that, it should be perfect in Rate mode.
- After that, yaw should be perfect in Attitude mode since it should be set to Rate or AxisLock.
- If it drifts in Attitude mode (no wind) you need to adjust Attitude ->RotateVirtual.  If it is drifting forward you subtract from pitch.  If it is drifting left you subtract from roll.
- You should set it on the ground when plugging the battery in.  You must set it on the ground when arming it.  Gyro biases are calibrated at these times and a human cannot hold it perfectly still enough for a good calibration.