Hi everyone, thanks in advance for reading my note here. I did do my best to read all the docs but could not find exactly what I was looking for - am hoping you much more experienced drone fliers could help a noob here...
I bought my excellent hexacopter from USR just over a week ago and have gotten the various additional parts (radio, batteries) together to fly it. Today I finished my ESC calibration and, being a coder, habitually updated to the most recent firmware (eg 2.8.1 to 2.9.1...). Hm. I then realized this involves some uh, recalibration, and did my best on that. Carefully calibrated the accelerometer as in the ArduCopter 2.9.1 instructions on this forum. And redid it a couple times to be sure... but I don't think that's it. Have not yet added vibration dampening, since I just got the USR drone and need to get more parts to make room for foam (could the lack of foam be leading to my symptoms below..?) I checked my PID values in the ArduCopter Config - they were as shown in the 2.9.1 instructions.
So when I carefully throttle up - as soon as the hexacopter lifts off it goes into a mad spin - either to the left or to the right. The yaw control does seem to have some effect - I can make it spin right or left. And it seems like it wants to start spinning faster and faster before I throttle down.
I was thinking to try to tweak the stabilize yaw value - but not sure what value to try and also, seems like the problem could be larger than this..?
Or am I missing something on resetting the gyros before flight ..? or ..?
I'd greatly appreciate any thoughts you might have on this... thanks again for your help and I hope to someday repay the favor.