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nano QX Blade nano QX Information and Help


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Old 01-02-2017, 02:50 AM   #1 (permalink)
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Default Nano QX initialization problem

I've got a new Nano QX, and I'm using a Spektrum DX6i TX. Normally it flies quite well. But frequently enough it simply won't initialize. So I unplug the battery and plug it back in, and then it does initialize. Sometimes I have to do this a few times.

Also, it sometimes loses it's initialization in flight. It will be flying just great (in either agility or stability mode) when it all of a sudden loses initialization. It wants to fly forward in a big way. It takes almost full back stick to hold it in a hover. Once this happens in flight it stays that way until I unplug and re-plug the battery.

Anyone else having this experience?

Thanks.
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Old 01-02-2017, 04:13 PM   #2 (permalink)
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Originally Posted by spork View Post
I've got a new Nano QX, and I'm using a Spektrum DX6i TX. Normally it flies quite well. But frequently enough it simply won't initialize. So I unplug the battery and plug it back in, and then it does initialize. Sometimes I have to do this a few times.

Also, it sometimes loses it's initialization in flight. It will be flying just great (in either agility or stability mode) when it all of a sudden loses initialization. It wants to fly forward in a big way. It takes almost full back stick to hold it in a hover. Once this happens in flight it stays that way until I unplug and re-plug the battery.

Anyone else having this experience?

Thanks.
Not clear what you mean by "losing initialization"... can you elaborate?

Just an idea... is the receiver antenna (the tiny red cable) still properly attached to the board?
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Old 01-02-2017, 05:02 PM   #3 (permalink)
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Not clear what you mean by "losing initialization"... can you elaborate?
I'll try...

I assume the flight controller learns what "level" is during the initialization process (just after you plug the battery in and set it on a level surface). Normally this works just fine. But sometimes it will be flying OK, and then all of a sudden it requires full forward or aft stick to maintain a hover. I take this to mean that it somehow lost the notion of level that it learned during initialization. But that's guesswork of course.

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is the receiver antenna (the tiny red cable) still properly attached to the board?
Yes. It doesn't seem to have any problem getting control from the TX. It just seems that it has locally lost its notion of level.
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Old 01-03-2017, 12:23 AM   #4 (permalink)
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Check that the board is properly attached to the frame, I had the tape getting hard and not enough sticky. I use to gently push the board down every now and then (I know yours is new but worth a check) .
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Old 01-03-2017, 12:46 AM   #5 (permalink)
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Thanks. That's actually one of the first things I did check. The mounting looks good.
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Old 01-03-2017, 01:56 AM   #6 (permalink)
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Then it has to be one of the motors.

You can try to swap them (front right to back left, front left to back right) and see if it now tends to go backwards.
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Old 01-03-2017, 02:01 AM   #7 (permalink)
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But the problem comes and goes. And it would have to be two motors going bad by the same amount at the same time since the problem is almost always a direct forward or aft trim.
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Old 01-03-2017, 08:39 AM   #8 (permalink)
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Got it now, it goes straight forward.

Then... no more ideas here ))))

EDIT: well... sure it's not the TX? Trims? Calibration?
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Old 03-12-2017, 03:14 PM   #9 (permalink)
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sure it's not the TX? Trims? Calibration?
Turns out you were exactly right. The elevator pot in my DX6i was failing.

Thanks.
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