I am wondering if you can hover a QuadX with APM2.0 in Stabilize mode, without GPS 3D fix and without magnetic declination? No sonar, just baro. Let's consider a hovering inside a building with metal walls and ceiling when GPS signal is not possible.
If no, could you please explain?
It is the same consider for both Arducopter 2.8.1 and 2.9.1?
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I'd be interested in knowing how you got on with this?
I'm not far off building a Multicopter to be used as an indoor inspection tool. Where we'll be going is a huge indoor space, metal wall, very little lighting. Most of the lighting will be provided by high intensity lighting on the machine itself.
I was thinking about using the APM 2.5 as the Flight Controller, we would probably fit sonar, I'd like some sort of position hold and the 'Optical Flow' might be a solution. I'm going to be trying to video up to 30 metres up and a couple of meters away from the walls.
Anyone had any experience doing this kind of work? Since I use the APM in my own Multicopters and planes I'm familar enough with the hardware, but its all been flying outside :) Do the accellerometers provide any level of position hold in release 2.9 of the software withouth GPS?