Discussions

No bars in initial setup of Radio Calibration

Posted by Airflix Drone Solutions on January 29, 2016 at 6:26pm

Hi everyone, I searched this problem and there were a few hits. I've successfully calibrated the acceleration and compass but get blank bars when doing the Radio Calibration. The radio is bound to the RX and all servos work. I got HUD and GPS lock but can't proceed with initial setup without the radio calibration.

I'm using Pixhawk PX4

MP 1.3.34

Arduplane 3.4.0

Taranis + 9XD (XJT module not yet installed)

X8R Reciever

Zeta Science FX79 Buffalo Flying Wing

One person who solved their problem reversed throttle on the radio. Not sure how to do this on the Taranis.

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Replies

Craig January 29, 2016 at 7:25pm

Make sure you are plugging in the X8R into the S.Bus on the RX side and the RC.IN [NOT] the S.Bus on the pixhawk.
- Airflix Drone Solutions > Craig January 29, 2016 at 10:47pm
  
  yup, that's how she's set up.
  
  do I plug my servos into the RX or the pixhawk main out?
  - Craig > Airflix Drone Solutions January 29, 2016 at 10:56pm
    
    You should power your servos via either your ESC's ubec or via an external ubec then run the signal/gnd from the ubec to AUX pins
    - Airflix Drone Solutions > Craig January 30, 2016 at 12:04am
      
      Any further thoughts on the radio calibration? I'm stuck on this at the moment and can't move past.
      - Craig > Airflix Drone Solutions January 30, 2016 at 12:25am
        
        some pics of your current setup would be useful.
        
        Airflix Drone Solutions > Craig January 30, 2016 at 7:54am
        
        I made a couple of videos:
        
        1. Initialization of the Pixhawk and bound X*R
        
        2. Mission Planner HUD and GPS view and Radio Calibration page
        
        YouTube
        
        Craig > Airflix Drone Solutions January 30, 2016 at 9:20am
        
        you are plugging in the wire to the RX in the wrong place. it needs to go on the bottom where it says S.Bus
        
        the way you have it you're trying to use PWM and hawks do not support PWM
        
        Airflix Drone Solutions > Craig January 30, 2016 at 6:22pm
        
        Thanks Craig, this got the radios calibrated. Now when I plug servos into the Pixhawk I get no reaction like when it's plugged into the RX.
        
        I tried Martin's setup but nada.
        
        Martin Poller > Airflix Drone Solutions February 2, 2016 at 9:09am
        
        Did you hold down the red flashing arming button to arm the servos?
        
        It's normal convention to have your elevons on channels 1 & 2 and the throttle on channel 3, not just from the servo main outs but also on the transmitter, I don't have a taranis but you should change your channels on your transmitter to follow that convention.
        
        Also note that your transmitter should be set on normal aeroplane mode with no fancy elevon mixing, (and definitely not helicopter mode) the pixhawk will do the mixing for you.
        
        here is a link to the elevon set up section in the wiki.
        
        Craig > Airflix Drone Solutions January 30, 2016 at 7:28pm
        
        http://plane.ardupilot.com/wiki/arduplane-setup/
        
        head on over to that link and run down the info. I'm not a fixed wing flyer so I fear I can do little to help with the servos as I have never hooked one up before :(