Alt Hold Crash - v2.3
Hey everyone, had a real weird thing happen to me while testing alt hold today. I have included logs and video. Around 85% in the tlog I switch to alt hold, all is well until 95% in the tlog where my the quadcopter just starts rotating unexplainably losing its heading and at this point I lose control and crash. I should have switched to simple mode but it happened so quick I just tried to bring it down the best I could.
I have 850Kv motors and stock 3dr frame, quad runs well in stability mode.
The video starts when I switch into Alt Hold mode, I was controlling using the right stick, no input on left stick at all.
http://www.youtube.com/watch?v=adRI9Rtv1_Q&hd=1
Any reason for the quad to just rotate like that? Any help greatly appreciated...
Replies to This Discussion
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Permalink Reply by Jay on -
Same thing happened again today in stabilize mode. I think I may have found the problem. My compass in Mission Planner does not correctly reflect my heading. Pointing North it shows correctly at 0, pointing East it shows 145, pointing South it shows 245, pointing West it shows 305.
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Permalink Reply by Brent on -
If your taking off and landing in snow small bits off snow blow up and get into the ESC's where it melts and causes problems, just something to check. Maybe let it dry out good and test indoors or T/O from a platform.
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Permalink Reply by Jay on
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No snow here its actually quite warm, but I have noticed that no matter which way I point the quad when I boot up it always shows pointing North in Mission Planner. Then it just gives wrong headings now South is 312, West is 301, etc. I think its a hardware problem. I'll tell you, just when you think you finally got everything working and you finally can start testing the various modes hardware failure. My compass is not working correctly at all. It would definitely explain the sudden rotations in yaw without any stick input.
Does anyone have any suggestions before I open an RMA with diydrones.com for my IMU?
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