Hello, hopefully this is the right Topic for posting this.
I am tryng to set up an AQ on a light quad (Warthox Frame, Suppo 2212, 9''x4.5'' Gemfan, 20 SimonK, 700g w/o battery). This setup has flown perfect with a Nanowii, so I thought it is good for starting with the AQ.
It worked quite OK in manual mode with the AQ, but not altitude hold in PH. So I tried some variations in the Altitude-PI settigs. But no stable result so far.
Today I tried to reduce Vibrations, set all parameters back to the values in the wiki http://autoquad.org/wiki/wiki/flying/tu ... on-tuning/ (except factor throttle, so it hoovers at centered throttle stick (with 0.5)). Then, I did another testflight (in light wind). Flying in manual mode worked good as usual (without trying extreme maneuvers). But it was still not holding hight. it "Jumps" successive upwards or downwards. I have to move the throttle stick quite far to get a reaction with altitude overwrite (sometimes i cant give enough, so i have to switch back in normal mode to safe the craft).
Well, then I tried some more aggressive maneuvers in manual mode. When I was stopping from higher speeds, it imeadiately flipped and tumpled to the ground. Hight was almost 10m I think. there was no increasing whobble or shaking, just a simple flipping and then no more controll at all.
The result are at least slightly bended arms, a damaged Lipo and broken proppellers. In addidion, when i tried another flight with new probs afterwards, it continuously rolled to the right, so that i hade to continuosly increase the roll command to the left to counteract. Is it possible that the sensors got damaged?!? The AQ-bard itself didnt get a scratch so.
When I removed the AQ-Board from the frame for inspection, I discovered, that the cable from the GPS-antenna was somehow loose in the plug and detached completely when I tried to disconnect the plug. Unfortunately it broke when I was trying to reattach it.
So, I have a youpe of questions so far (a logfile of the flight decriped above can be found here https://depot.uni-konstanz.de/cgi-bin/e ... 5kzmekasga ):
What is the reason for the failure of altitude hold? Noise? Parameters? I know that I have vibrations on this frame that I cant get rid of completely. But it flies good in manual mode with the AQ and flew also with the nanowii. In addition, it is used by other people... I simply dont have the experience to decide what is the most important thing to focus on for solving this issue.
What is the reason for the crash? is this the "divergence issue" descripted in other posts? Is it probable that the sensors got damaged as a result of the crash?
Any ideas what to do with the plug for the GPS-antenna?
Is the Lipo (see picture) still safe to use? Any experiences about it?
Thank you in advance for your efforts and with best reagards, Sören