Channel remaping (warning with changing mode)

Hi to all.

I'm flying copters over 3 years. Had OpenPilot, Multiwii, and ported to STM32 multiwii.

This time i've started new project with arducopter.

I've called it Gerris.

I've had plan to use AIO, but I didn't like it and changed plan to use APM.


It's almost ready. Only need to cut motor cables and need to setup APM.


But, I have some small problem, which stopped my progress.

I have JR PCM9X radio with FRSKY. I'm planing use RX with enabled CPPM. But with this combination is one small problem with channel order.

So my question is. How to change channel mapping in APM ?

I've tried changing modes in JR (1,2,3,4) but without success.

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  • Page 142 of 3.0.1 release discussion.
  • Hi Bartek, I had the same issue. You can alter the code and download to your amp via arduino ide. My discussion is here

    There is a channel mapping function coming out I think in the next release or so.

    If you choose to alter the code (which is only swapping a couple of numbers around) if you are on 2.9.1 you will only have to do as suggested by Randy in the link above. If you are on 3.0.1 you also have to swap 2 other numbers as mentioned around page 140 ish of the 3.0.1 release discussion. I fly mode 1 but have to set the tx to mode 2 for it to work for me.
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