log help for issue with loiter

zAccel is primary sensor used for Alt Hold. Alt Hold is the second major part of loiter. The other major part is GPS for position hold. Don't start with a good GPS lock you get a fly away. zAccel measures your z axis or up and down movement. Bad vibration messes up zAccel. You need values between -5 and -15. -10 is basic gravity pulling us down. Balance props and vibration damping on the corners of your APM help. I also recommend a strap over damping material on top of the APM holding it down.
The next release of code will use x and y Accel for a much better position hold. It's good practice to check all three Accel values and make sure vibration is minimal.
Good luck and fly safe.

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T3

Richard Boyhan May 12, 2013 at 6:20pm

zAccel is primary sensor used for Alt Hold. Alt Hold is the second major part of loiter. The other major part is GPS for position hold. Don't start with a good GPS lock you get a fly away. zAccel measures your z axis or up and down movement. Bad vibration messes up zAccel. You need values between -5 and -15. -10 is basic gravity pulling us down. Balance props and vibration damping on the corners of your APM help. I also recommend a strap over damping material on top of the APM holding it down.
The next release of code will use x and y Accel for a much better position hold. It's good practice to check all three Accel values and make sure vibration is minimal.
Good luck and fly safe.

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log help for issue with loiter

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