Hi,
since yesterday i have been trying to fly a copter with ardupilot for the first time.
have made my way so far that I am able to arm.
but as soon as I step on the gas, the copter behaves like a rodeo horse. up to now no hovering was possible.
it feels as if the position sensors are getting completely wrong values.
under inav the same copter flies immediately, even with non-optimized PIDs.
I calibrated everything several times according to specifications. i was also in stabilized mode. propeller and direction of rotation were also ok. frame-class = quad. frame-type = x. taget = matekf405
is probably a simple mistake, but I can’t figure it out.
Is it a small propped craft (4-7" say) and you are trying to fly it with default parameters? Have you checked the Wiki for the Initial Tuning parameters?
it is a little special. 246g inclusive 2 li ions. 8" props. hoover time with inav 53 mins.
i have no clue how 2 configure PID with ardupilot. with inav it is very easy.
Don’t manual tune or auto tune at this point (bad advise).Connect to Mission Planner and hit Alt>A for the initial tuning plug-in. Enter the values as prompted and make the parameter changes as suggested. Before doing so update Mission Planner to latest Beta version from the Help Screen.
After this you should really prepare to set the Dynamic Notch filter. Read the Wiki.
THEN, you may be ready for Auto Tune. And finally Manual Tune if required.
BTW-I have a sub 250g 5” on Li-ion. Not that special but that’s impressive flight time. ~30min with mine.
There is something in principle wrong.
When I hold the copter in hand and tilt forward, the rear engines running faster and vice versa. But I properly built the board around.
This is what Mission Planners Motor Test function is for. Props off and make sure you understand the order it runs in. Read the note, follow the link.
If it’s already setup for BetaFlight X order (not sure if iNav follows this) you can just change the Frame Class to fix this. Or, remap the outputs.
Another consideration is it’s typical to have to reverse the pitch channel in your radio.
And lastly, make sure it’s pitching/rolling the right way in Mission Planners HUD. Perhaps your board orientation is non-typical. Actually this is the 1st thing to check.
