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.
We checked your Hexa, RMA#86. We first had an error while trying to upload the code, it failed on the first two attempts, but on the third one was successfully uploaded. Then everything went as normal, ESC calibration and RC configuring. Put the props on and we had a successful & smooth flight http://youtu.be/4_KKnfBAEto. We will look further into the APM. Your new unit will ship out tomorrow, along with your RC and Lipo.
Thank you, G