@megabotz69 wrote:
Yesterday, a friend & I were attempting to test a new build (tricopter w/ pixhawk mini, Copter 3.5 rc4) of mine. After plugging in, I got an error saying "Gyro not calibrated." I went through the steps to calibrate but after calibrating the compass, the gyro message disappeared.
Once in the air, we started with trying to tune hover. My pilot friend was able to hover briefly but after about 30 seconds or so, he had to throttle up to 100% just to stay in the air but even then, we saw the multirotor float down rather slowly & then hit the ground. On the tuning tab of QGroundControl, we raised the "hover" slider each time we came down, thinking that the throttle wasn't high enough. On the final flight, I saw that in the beginning the throttle stick was about at 50% & we had good hover. Within seconds of noticing this my pilot buddy again had to keep raising the throttle to keep in the air until he was at 100%, with the craft drifting to the ground like we had seen in the previous flights this same day.
I have included the log because I am inexperienced at examining them. I know the motor/prop/esc combo to be good but I am buying a thrust meter & stand just to be sure. I have no idea if I am looking at voltage sag, a bad TX, or what?
Can someone take a look at the log & extrapolate clues as to what we experienced?
log_37_2017-5-6-14-07-42.bin (2.4 MB)
Many thanks in advance!
megabotz
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