"The (primary) estimation of attitude now in APM 3.4 utilize the "Extended Kalman Filter" algorithm. The method combines all the information including accelerometer, gyro, magnetometer, barometer, GPS, and so on.
Theoretically the algorithm it can…"
"Yes, you can do that by seeing if you can measure at least 20A at full throttle. If it's significatnly less than that, it probably means your battery cannot output 80A of current (or you have a really low quality ESCs like I do).
However, my point…"
"Then it is unlikely to be an black out/ brown out event. But the lack of the power to ESC is still possible. I would simply guess it not enough power from the battery, or the 20A limits of your ESC has been reached. You can make a static test to see…"
"Not sure what's your configuration, but since the APM will try to compansate throttle for the leaning, 70 degrees of leaning would mean around 3 times of level hovering thrust ( 1/cos(70deg) ).
If any of your ESC maxed out, it'll cause controller…"
"Sadly I don't really have a solution. I've bump into the compile problem for APM2.x long time ago, and seems the developer simply stop supporting the version. Maybe you want to check the like below and the link in its reply, but I don't think that…"
"That's part of the definition of eular angle, used to represent attitude.Let's say an attitude start with level, pointing north. Then you pitch it back for 120 degrees passing zenith. Which is actually end up with first yaw 180 degrees, pitching 60…"
"I think the code is probably buged. We have encountered the same problem and couldn't fix it yet and sort of gave up. So far we're trying Pixhawk's original firmware."
Sorry, if this is a very elementary problem. But I haven't able to solve it for 3 straight coding days. :(I'm developing a different type of quatrotor controller with ArduCopter V3.3-dev according to some papers. And for those controller, I need…
"I've got the same problem here today with 1.2.88. This happened without any obvious change on my computer (maybe with few windows 7 updates). 1.2.88 worked well before (and I even had preloaded the map) . After my friends told me he can't load the…"