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APM 2.5 Twitching problem

Hi,

I have some serious problems with my 3DR Quadcopter with APM 2.5 and 3.0.1 firmware.

When I fly, the Quadcopter is twitching about ones every couple minutes in one direction. Forward, backwards, left right and even upwards. Also sometimes the signa

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Altitude

I know this has been raised before but I have been unable to refind the answer. What altitude units are used in the Mission Planner and is it possible to change the units. I read that the default altitude is metres. Is that correct - can it be change

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pb geofence on 2.9

hi everyone,
I'm trying to experiment geofence on arducopter 2.9, but i can't activate it in the flight planner, the writing is always grey.
I have tried to activate the "lim_" command in the parameters list but it seems to do nothing !
Do i miss someth

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In-flight lockup and reset?

I recently built a new X8 Skywalker and took it out for its maiden flight today. It has a APM 2.6 with the uBlox LEA-6 with compass GPS that was used on a previous X8 Skywalker with quite a bit of success. Almost everything stayed the same between th

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Weird GPS/ video issue

All, 

I really need some help. I just recently got my FPV stuff and put it on my bird. Anyway, as soon as I turn on the video transmitter the GPS goes dead. If I turn the transmitter off and reset the system GPS comes back full strength. I have search

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