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Altitude not same?

Hello,

have you noticed the difference in altitude shown in the planner, with a direct USB connection and 3DR radio?

Tested with the last edition of mission planning 2.5.1 and configuration Arducopter


Thank you.

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Motor problems

HI guys

I just took the cuad out to test LOITER mode, and I didnt even get off the ground,

When I arm the motors and give the smallest of throttle just to check everything is okay before takeoff, the LEFT motor goes crazy, almost 50% throttle I would g

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poor gps presicion

hi

im just adding gps into the mix to see if my cuad is capable of decent position hold,

i have him sat in the window, with 7 sats and 3d fix, hdop goes between 150 and 250.

looking on the map, it shows the drone as moving a lot, between what i would im

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ArduIMU V3 output Error

Hi,

I just ordered the ArduIMU and when I try to view it from the arduino serial window it only works for 9 loop refreshes then it displays a line of random characters and then repeats. I believe it is a result of a serial timing error. Any suggestion

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Changing UART0 on APM2.5

Just got an APM 2.5, but unfortunately without the DF-13 to XBee connector that was supposed to come with all APM2.5's.

 

While assembling the board, I noticed that the new DF-13 port is marked as UART0, but there are also four normal pin sockets/holes

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Upload new firmware and parameters ?

Hello, i'm a french new user of the arducopter on a GAUI 500X.

Everything is relly fine by default, but i have a question :

Will i lose my parameters ( PIDs or else i modified ) if i upload the last firmware on my APM board ?

Are the parameters loaded "

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ArduPilot Process/File Hierarchy

Hi,

I'm trying to figure out how this beast works and so far, I'm only getting more and more confused. I'd really appreaciate a quick explanation.

What is the primary process that runs when I turn on the autopilot? Is it the Arduplane.pde? If it is, wh

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