PreArm Trim Error

Hello Everyone!
My name is Pavel. I’m beginner. I have some difficulties with my Quadcopter and Pixhawk PX4 PIX 2.4.8 Flight Control. On Miission Planner Flight data screen I have message: “PreArm: RC16 maximum is less than trim”
What does in mean?
What should be done to fix it?
Help me, please. Thank You

P.S.

You can fix this by setting RC16_TRIM to 1500, RC16_MIN to 1000 and RC16_MAX to 2000 in the full parameter list. You will have to do this for any channels above the number of channels your receiver has. This is caused by a mission planner bug in the RC calibration, you also may be able to download the beta mission planner and re-calibrate RC inputs to fix.

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Great thanks for such a quick reply. I use version 1.3.62 MP. Which file is Beta? http://firmware.ardupilot.org/Tools/MissionPlanner/beta/MissionPlannerBeta.zip
or
http://firmware.ardupilot.org/Tools/MissionPlanner/MissionPlanner-latest.zip ?

in your current version, go into the help tab and at the bottom click check for beta updates

ps: the beta is MissonPlannerBeta

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Hi, Peter!
Can I use Mission Planner to configure settings of this PDB
http://www.mateksys.com/?portfolio=fchub-12s#tab-id-2

yes, it gives the amps/volt values and voltage scale here:

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OK.
Do I need to install ChibiOs when installing the firmware?

its recommend to use ChibiOs yeah

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Сan I change the direction of rotation of the props through MP and how?

no, just swap two wires on the ESC

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One more question. My radio is Taranis QX7. I was able to calibrate the sticks through MP, but I can’t calibrate pots and switches. How can I fix it?

it will calibrate everything its sent, you will have to setup the switches to output to the receiver in the transmitter firmware first.

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Hi, Peter!

Your tips were very helpful to me. But now I have new questions. I find answers to some of them, some don’t.

The EKF value is always red in the Mission Planner. On the Internet, I found several links with a recommendation to disable EKF.

For example: https://www.youtube.com/watch?v=31HG7dRIwkQ

But in those examples, the interface of the previous versions of the program is used, and in my version I did not find the parameters mentioned. What could You recommend to me?
Thank You