I have what started out as a Cheerson CX-20 (open source model) with APM 2.5
I crashed it a gorillian times and every time the very fragile frame broke, so I finally just bought a frame off of Amazon and transplanted everything over.
It flew great initially, I have a go-pro on a gimbal so I usually fly slowly and just video stuff and I use loiter mode A LOT. I also have a 5.8G FPV setup if that matters.
I started having issues with circling when in loiter mode. I would switch to that mode and it would slowly begin to circle around and the circle would wider and wider and eventually it would just fly off, the first time this happened I wasn't prepared and a nasty crash was the result, afterward I have learned to switch back to manual mode and wobble and bobble my way home.
From what I have read, this behavior is almost always caused by a compass error.
I went through calibration in mission planner so many times I lost count, I do the live calibration and get my offsets etc etc, I would check the heading shown by the onboard compass against a real compass, and it was NEVER the same, so I would go in and make adjustments in advanced parameters to make it match the compass. I did this over and over and it never fixed the issue.
So I went ahead and ordered a Ublox Neo-6m GPS/Compass combo and installed it today. its mounted up about 4 inches above the quad.
Everything works, the gps is locking and the compass is giving readings. Went through live calibration .. same issue, it calibrated, gave my offsets, but the indicated heading is about 20 degrees off of what my other compass says.. so I adjusted it via advanced params.
I've tested for motor interference by running the motors though the RPM range and watching the compass readings, i don't seem to be getting any interference from the motors.
No change, none whatsoever, when switching to loiter it immediately begins to circle.
I'm out of ideas. I think it would be a good idea at this point to flash the APM back to stock, Ive messed with and tinkered with so many settings I might have screwed something up, though I cant trace this issue back to any changes I made in MP. Although I don't know where to even find the stock settings anyway.
I'm pretty new to all of this, so any help is greatly appreciated.
I crashed it a gorillian times and every time the very fragile frame broke, so I finally just bought a frame off of Amazon and transplanted everything over.
It flew great initially, I have a go-pro on a gimbal so I usually fly slowly and just video stuff and I use loiter mode A LOT. I also have a 5.8G FPV setup if that matters.
I started having issues with circling when in loiter mode. I would switch to that mode and it would slowly begin to circle around and the circle would wider and wider and eventually it would just fly off, the first time this happened I wasn't prepared and a nasty crash was the result, afterward I have learned to switch back to manual mode and wobble and bobble my way home.
From what I have read, this behavior is almost always caused by a compass error.
I went through calibration in mission planner so many times I lost count, I do the live calibration and get my offsets etc etc, I would check the heading shown by the onboard compass against a real compass, and it was NEVER the same, so I would go in and make adjustments in advanced parameters to make it match the compass. I did this over and over and it never fixed the issue.
So I went ahead and ordered a Ublox Neo-6m GPS/Compass combo and installed it today. its mounted up about 4 inches above the quad.
Everything works, the gps is locking and the compass is giving readings. Went through live calibration .. same issue, it calibrated, gave my offsets, but the indicated heading is about 20 degrees off of what my other compass says.. so I adjusted it via advanced params.
I've tested for motor interference by running the motors though the RPM range and watching the compass readings, i don't seem to be getting any interference from the motors.
No change, none whatsoever, when switching to loiter it immediately begins to circle.
I'm out of ideas. I think it would be a good idea at this point to flash the APM back to stock, Ive messed with and tinkered with so many settings I might have screwed something up, though I cant trace this issue back to any changes I made in MP. Although I don't know where to even find the stock settings anyway.
I'm pretty new to all of this, so any help is greatly appreciated.
