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Big Ben said:OI Photography said:This is purely speculation on my part, but it seems perfectly normal to me that you'd see the yaw effect from that type of stick input.
Yes... if it weren't for the fact that the NAZA is supposed to have a bit more 'brains' than a spinning coin and is supposed to actively keep its orientation with the help of the many sensors it has, one of them being a compass which should give it the possibility to 'stick' to a given magnetic course until the pilot tells it otherwise. Otherwise being left stick rudder input. In the absence of such input I expect it to maintain its compass orientation.
The only thing I can figure is that compass orientation not being a precision measurement, if it constantly corrected for heading, it might jitter all the time, yawing left/right constantly. Add to that all the electronic equipment that these things carry that can also interfere or cause "noise" in the compass heading, and I bet they were forced to build in some slack where the system has to take an average over time to determine heading and possibly even update the preferred heading.
So the system may average multiple readings over time and even "recalibrate" the actual direction you are "supposed" to be heading. If it is making those calculations while you are grinding on the right stick like you're making a milkshake, some of the calculations and averaging might get confused and the system might actually update your "target" heading because it thinks it's getting erroneous compass readings: and it's trying to correct those. It does seem like something that could probably be fixed in firmware though: like stop certain heading calculations if quick motions are being made on the flight stick(s). Or just never update preferred heading unless the left stick is moved. Of course, this stuff is quite complex so I'm not sure what else that might affect (potentially adversely).
Curious though, what do you think was the primary problem that got fixed for your initial flight issues... what was the cause do you think?
Mike