Octo X8 spins by itself when take off

Guys,

Really need your help here. I've been trying to fly my new Octo X8 with the AC3.0.1. Compassmot is at 30% which should be ok. Problem is that the copter spins when taking off all by itself. I had to jump on the ground to avoid collision with the quad. This is not acceptable. I've downloaded the Logs (no Tlogs as telemetry not hooked up because it broke in a previous crash due to the same issue). 

From what I can tell from the logs, the FC receives weird YAW instructions from the Rx. Really I cannot explain it as the radio range seems to be ok. Please, really need your help as I'm about to give up on Arducopter after 1 year flying on it. The 3.0.1 seems to be way to experimental for me and I cannot afford to break any more material.

Attached is the log file. Any ideas are welcome !!!

Thanks in advance

2013-09-01%2011-37%2073.log 

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  • 3D Robotics

    Are you sure your props are all in the right position/direction? Also, when you switched to 3.0 did you mount your APM on vibration-damping foam? (it requires that, as opposed to earlier versions; its superior performance comes from using the accels more). 3.0 is the best-tested, best performing software the team has ever released and is flying on thousands of copters without issue; it's not experimental at all.

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