Current peaks followed by a crash

Hi! (First post)

The problem: The octa crashed, the hexa wobbled, logs shows current peaks and I dont know how and why they appear.

3DRobotics X8 with 3DRobotics APM 2.6 (fw 3.0.1):

In auto mode, it flew against the wind and almost reached a waypoint, slows down, flipped forward and fell 130 metres inverted. The logs in Mission Planner shows there are two current peaks and then the current drops followed by the flip. What are these peaks? Look at tje attached picture CurrentX8.JPG. The red is current, the green is altitude. The X8 flipped at the top of the green peak.

3DRobotics Flat Hexacopter with 3DRobotics APM 2.6 (fw 3.1.5):

No wind, just hovering around in stabilize, suddenly the hexa started wobbling and descend for a few seconds. And again after a short while. Logs shows the same current peaks at the wobbling, peaks are 4 seconds long, like the above. Initiates landing.

Looks at older logs and finds a peak in another flight with the hexa.

What could be the problem?

CurrentX8.JPG

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