(14-Apr-2024, 12:48 AM)segler999 Wrote: When my 2S build did exactly the same thing as in the video, I simply changed the rpm filter in the PID tab.  Don't change anything else; only the rpm filter.  Slide the two sliders a bit to the left from 1.0 to something like 0.8, then try to take off.  That worked for me.

Thanks, Segler999. I have done as you mentioned, but no effect on the drone. It flips over as I touch the quad just a bit (as in the video). Any new ideas? Tks.

(14-Apr-2024, 03:25 AM)mstc Wrote: If the frame is cracked or some component is loose, this could cause excessive vibrations and cause the gyro to flip out. Is this a brand new BNF and this is the factory installed BF settings? You can try as Segler suggests. If that doesn't help, did you spin up the motors one by one in Betaflight configurator? Do they each spin up smoothly and pushing a lot of air downwards (you can briefly blip the sliders)?

Also are you taking off in acro mode? If you are using angle mode, make sure you calibrate your accelerometer.

Hello, Mstc. Thanks for the new inputs. This quad is a brand new one. I just made the serial changes in the BF settings mentioned above by SnowLeopard. The Segler suggestion did not change the problem. I checked all the motors one by one moving the sliders for each one. They are running smoothly. I am taking off in angle mode and the accelerometer is calibrated. Any other idea? Thanks a lot for the help.

I would try in acro mode and see if you see the same odd behavior. Also when you spin up the motors, the configurator also shows the gyro readings. Do you notice any excessive vibrations for any of the motors?

If you are comfortable, you can hold the drone firmly in you hand (not touching any props) and arm in acro mode. You can gently move the pitch/roll stick and see if the motors spin up accordingly, also try yaw. Also with throttle up slightly, when you tilt the drone, you should feel the drone fighting to hold the original position. If the motors go crazy then just disarm.

(14-Apr-2024, 03:23 PM)mstc Wrote: I would try in acro mode and see if you see the same odd behavior. Also when you spin up the motors, the configurator also shows the gyro readings. Do you notice any excessive vibrations for any of the motors?

If you are comfortable, you can hold the drone firmly in you hand (not touching any props) and arm in acro mode. You can gently move the pitch/roll stick and see if the motors spin up accordingly, also try yaw. Also with throttle up slightly, when you tilt the drone, you should feel the drone fighting to hold the original position. If the motors go crazy then just disarm.

Hello, Mstc. Thanks for your help. I have checked the tutorial https://oscarliang.com/quad-flip-over-is...0component. and found it was need a configuration on Board and Sensor Alignment (180 yaw Degrees). That solved the problem. Now I will take it off. Thank you so much for all your help.

(14-Apr-2024, 02:04 PM)felixrib Wrote: Thanks, Segler999. I have done as you mentioned, but no effect on the drone. It flips over as I touch the quad just a bit (as in the video). Any new ideas? Tks.

Hello, Segler999. Thanks for your help. I have checked the tutorial https://oscarliang.com/quad-flip-over-is...0component. and found it was need a configuration on Board and Sensor Alignment (180 yaw Degrees). That solved the problem. Now I will take it off. Thank you so much for all your help.