MR60

How to assign a receiver channel as a pass-thru Pixhawk ?

Posted by Hugues on February 16, 2014 at 3:14am

Hi,

I would like to configure two radio channel of my receiver to pass-through Pixhawk on its RC aux channels (that is the RC9 to RC14 aux PWM outputs).

I found in mission planner the RCx_FUNCTION parameter which allows to define that RCx will be used as a pass-through output. But the question is how do you allocate which receiver channel will be passed through it ?

Thx

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

Join diydrones

Email me when people reply –
Follow

Replies

    • MR60
      Hugues March 21, 2014 at 11:20am
      Thx a lot
    • Emin Bu > Artem March 20, 2014 at 1:55pm

      Artem,what about Graupner MX20 with gr24 rx?

    • Artem > Emin Bu March 20, 2014 at 2:17pm

      does it have a dedicated ppm port? if so, you should be able to grub pwm from the pwm pins simultaneously with ppm feed to your fc.  if no, than get a ppm-pwm converter, put y harness before it. this way you will have ppm and pwm for the same channels. I think it is better to keep FC to do only a singe task of control the aircraft/providing telemetry and control all the peripherals with another board or directly with the RC to take off any additional stress/work on the FC, thus providing more timing for crucial operations. 

      EDIT:

      or get FrSky Taranis with DTF UHF :) 

    • Emin Bu > Artem March 21, 2014 at 4:17am

      Artem,yes it does have PPM  port,so I just grub PWM from PWM channel 9 and 10 for example(I have 12 channel in total) for pitch and pan control of my AlexMos 3ax gimbal controller

      here is how everything should look

      Simimple BGC  3.0.0  (322bit) connection diagram

      SimpleBGC_32bit_Connection_Diagram.pdf

    • MR60
      Hugues > Artem March 20, 2014 at 11:34pm

      What's that DTF from frsky?

  • Developer
    Randy February 16, 2014 at 10:10pm

    Hugues,

        I'm afraid that's not supported in ArduCopter although it's on the to-do list.  I might be possible to use the camera gimbal and set the tilt drop-down to the output channel you want to use.  Then make sure Stabilize is unchecked and then set the Input Ch drop-down to the channel from the radio that you plan to send your inputs through.  No sure but might work.

    • Sam Grob > Randy March 20, 2014 at 9:04am

      Randy, let me first say thanks for the huge amount of work the devs and especially you put into this. I am in no position to try to influence the priorities on the "to-do-list". 

      But this feature - a simple, straight, no hacks , no crutches passthru of RC-Channel x to AUX-out Pin x is probably the most wanted by the Arducopter users. Everyone wants to control servos for auxiliary functions like landing gear, pan/tilt of brushless gimbals etc. etc.  (By the way, servo controlled gimbals are pretty much extinct now, might as well dump that code to make room for something else on the APM)

      Heck, you guys are close to reading channels 9 to 16 on the SBus - might as well let us do something with these ;-)

    • MR60
      Hugues March 20, 2014 at 12:39am

      Do you have screenshots of your camera gimbal screen , your extended tuning screen? And eventually also a schematics of your wiring?

    • MR60
      Hugues > Randy February 16, 2014 at 10:33pm

      Thx. I ave tried this with the camera trigger for ch7. It works but I notice a strong lag versus plugging directly into the receiver.

This reply was deleted.