I’m Just getting started with copter and have breadboarded a Spectrum DSM Rx with the Pixhawk.
When “calibrating” the transmitter in Mission Planner I find that my Rx Sbus output is looking for all the world like the channel interpretation is very much Futaba. Can this be changed and if so how??
HELP Thanks
mandoman
What flight controller are you trying to connect it to? (pixhawk can mean a lot of things) If you tell us the model then somebody might be able to give you more specific guidance.
My Pixhawk is a holybro pixhawk 6C
Are you using the DSM port or the SBUS/RC port? Are you sure the receiver isn’t outputting SRXL?
Ardupilot is generally good at auto-detecting the RC input protocol, especially if you’re using the dedicated input pins. If the Rx is actually SRXL (I think all new spectrum receivers are) you’ll need to use a proper serial port. The link I just posted has the instructions.
Thanks for the quick turnaround Allister 
I have older spectrum equipment so no fear from SRXL. I have tried both dsm and ppm/sbus ports and for whatever reason the Pixhawk 6C is mapping the SBUS data into the Futaba layout! If there’s a way to remap the channels within the 6C or hacking the 6C I’m up for that. The easy fix would probably be to go buy a Futaba tx/rx but I have been a JR person for my entire RC life(~60 yrs!) and know absolutely nothing about Futaba (except I saw a lot of guys crashing while using one 
) so picking the right one would be a crap shoot for me!
Thanks TOM
I think I’ve misunderstood what you’re looking for. Do you mean the channel order? The default for ardupilot is AETR, but if you want to change that then you can change the RCMAP Parameters.
I think spektrum is TAER so set
RCMAP_THROTTLE,1 # default is 3
RCMAP_ROLL,2 # default is 1
RCMAP_PITCH,3 # default is 2
RCMAP_YAW,4 # default is 4 ... so I guess you can leave this one alone.
No hacking required.
Yes Allister this is the issue. I think I’ve got it now 
– Just a slow learner
Thanks TOM