Info on Chan 9 to 16

Posted by Ken Smith on May 28, 2016 at 10:09pm

Hi everyone.

This is my first build with a Pixhawk.

I have my Frsky receiver bound with telemetry and chans 9 to 16 available.

My question is can I get access to these higher chans in mission planner, if so how?

I have noticed if I set say RTL in extended parameters on chan 8. When I look in standard parms, the RTL is on chan 9. But in Full parms it is on ch8_opt. This is a tad confusing for me. Don't want to fly and try these until I am sure and understand what is going on.

Also is this where I can use the chan 9 to 12? If so do I set in Standard or Full parms as they appear to be out by 1 chan.

Is there any way I can use chan 6 for things other that what seems to be just tuning type things.

Thanks in advance Ken

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –
Follow

Replies

  • Michael Burmeister June 3, 2016 at 3:19am

    I just checked Mission Planner and changing CH10_OPT on the standard screen changed CH10_OPT on the full parameter screen.  No issue.  Please note that the description comes before the parameter option on the standard screen.  This was a little confusing to me at first.

  • MR60
    Hugues June 1, 2016 at 12:40pm

    Standard paramsgives you a simplified subset of the parameters while full param lists all of them.

    Mode changes (like RTL) must happen through channel 5. You cannot use any other channel. So trying to set RTL mode through channel 11 can't be.

    Test your mode change in the corresponding screen in mission planner; you can define six modes. Each mode has its own PWM range. Read the Ardupilot wiki a bit.

    • Ken Smith > Hugues June 1, 2016 at 12:55pm

      Sorry Hugues,

      But totally disagree with your response, can set RTL on chan 7 and 8. Understand fully the modes on channel 5 and the PWM values

      I have set it on chan 11 in full params and it works.

      Ardupilot wiki is a tad old it gives no thought to a Frsky receiver with 16 chans.

      May I ask you to have a look in Config/tuning in Mission Planner, under extended tuning and the settings you can do for Chan 7 & 8.

      Then cast your eyes over config/tuning but this time full params and curser down to Chan 7_opt thru Chan 12_opt, have a look at these options for settings. They also work when set.

      Thanks for your response  Ken

    • MR60
      Hugues > Ken Smith June 2, 2016 at 11:39am

      You are right, you can indeed use CH7 , CH8 for auxiliary functions, among which RTL.

      Here is what the wiki says:

      Auxiliary Function Switches

      This article shows how to set up which features are invoked from the transmitter’s auxiliary function switches (Up to/including AC3.2.1 you could only set the Channel 7 and 8 options, From AC3.3 you can set options for channels 7 - 12).

      Note

      AC3.3 introduces support for auxiliary functions on channels 9 ~ 12.

      Configuration

      By default the auxiliary switches are disabled but you can assign features using the Mission Planner‘s Config/Tuning | Extended Tuning screen or by setting the CH7_OPT (or CH8_OPT) parameter directly.

    • Ken Smith > Hugues June 2, 2016 at 3:55pm

      Thank you Hugues,

      Now I hark back to my original question.

      Why is there a difference between chan options in Standard and full params. You set something on chan 11_opt in full params and it appears on chan12_opt in standard params. Why? The functions works, I have tested it. But not comfortable flying around at distance and height because I am unsure of the outcome.

      I think I will put the Pixhawk on just a frame and motors and program these functions and go for it and see the outcome. If it crashes no great lose, motors, esc and controller usually survive.

    • MR60
      Hugues > Ken Smith June 2, 2016 at 11:09pm

      Have you tried another ground station software to verify if it is not a mission planner software bug?

    • Ken Smith > Hugues June 3, 2016 at 12:21am

      I am running 3.3 in pixhawk and 1.3.38 in mission planner. I have loaded old version of mission planner  with the same outcome. Have tried it on Tower on my tablet, still no good.

      Like I said I think I will send and old bare bones frame up with a pixhawk on it and fly around and try all variations for a while and try and make sure it does not get tangles up inside pixhawk and crash.

  • Michael Burmeister May 31, 2016 at 9:24am

    Mission Planner does not display channels higher than 8.  You have to use the full parameter list to change these values.

    • Ken Smith > Michael Burmeister May 31, 2016 at 11:47am

      Ok thanks for that Michael.

      So what is the difference between full params and standard params. So I set say RTL on chan 11 in full params why does it appear in standard param on chan 12. All the remaining chans are 0, do nothing. But when I set in standard param on chan 11 it appears in full params on chan 12.

      Why is this so and is it safe to fly like this?

  • This reply was deleted.
    • Ken Smith May 30, 2016 at 8:42pm

      Thanks Pektusin.

      Have a look when I get home.

      Just in case because I don't remember seeing ch9_in anywhere, only ch9_opt.

      Where do you find ch9_in and these AUX 1 - 6 in mission planner.

      Tks for your response

This reply was deleted.