Discussions

APM MavLink to FrSky X8R S.Port converter

Posted by Rolf Blomgren on January 24, 2014 at 8:03am

Hi all,

I just bought an FrSky Taranis for my quad copter and needed to get the Mavlink data up on the Taranis LCD telemetry display. So here is my solution using a Teensy3.1 as a converter between MavLink and the S.Port on FrSky X8R.

See attached file below...

MavLink_FrSkySPort_1.3.zip

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Replies

- - - Mike > Timo Schrevel June 11, 2014 at 1:44am
      
      What did you change to get it working? I have done the same as you described above (APR 29 10.06) and have got the same error as you reported.
  - Artem > Rolf Blomgren April 29, 2014 at 11:13am
    
    Hi Rolf! are you still working on the project or 1.3 is the final version?
Tom Smith April 28, 2014 at 9:38pm

Thanks Rolf, this is really awe inspiring work, esp. how well it actually functions!

Just a little tip to any who may follow: Double check that the Rx and Tx pins are connected properly - it took me a a little while to debug why the Teensy wasn't getting a MAVLINK connection (and flashing the LED at a rapid rate to indicate the same)

Happy flying!

Tom
LTMNO April 23, 2014 at 8:32am

Question...

Will this only work with the Taranis?

Will it work with Turnigy 9X modified to run OpenTx or Er9x? with the X8R Rx

I have the Teensy3.1, just about to put the firmware on it... just curious?
- LTMNO > LTMNO April 23, 2014 at 12:45pm
  
  Alright the update...
  
  In order to get it to work with my T9x(ER9x) with SmartieParts_v4 + TelemtrEZ + XJT + X8R, you have to make sure you have the latest firmware for ER9x, TeZ and you have to make sure you connect the Tx (Marked in Blue) from the back of the XJT module to the Signal Pin of the SPort(Marked in Red). AND run in D16 Mode with PXX setting in ER9x.
  
  See attached picture.
  - AlanGP > LTMNO April 23, 2014 at 12:54pm
    
    With a standard telemetry modded 9X or 9XR i.e. those without PXX capability. I think taking a direct feed from the RS232 port on the XJT via a RS232 to TTL level convertor to the TX and RX ports on the main transmitter board should get the same result. Unfortunately, I have no way of checking this at present.
    
    Edit: But I do have an FLD-02 somewhere - proof of concept - a project for the weekend.
    - LTMNO > AlanGP April 23, 2014 at 1:05pm
      
      I am not extirely sure... here is the post on OpenRCForums that describes...by MikeB
      
      http://openrcforums.com/forum/viewtopic.php?f=94&t=5349&p=7...
      
      If you have XJT which is what you need from my understanding for SPort then you will have the PXX option in the 9x or 9xr.
      
      But you could be right. ;-)
      - AlanGP > LTMNO April 23, 2014 at 1:19pm
        
        OK - output the data from the SBus data line at 57600 and input that to the RS232 port on the XJT. i still need to get the data to the processor in the 9X or 9XR - i will need to work on that.
        
        LTMNO > AlanGP April 23, 2014 at 1:34pm
        
        i am not sure if you can do that on the SBUS... but what do i know. ;-)
        
        all the best!
        
        I need to work on the data now as its not all there as in the Taranis as that is based off of OpenTx and I am running ER9x.
        
        Cheers
- LTMNO > LTMNO April 23, 2014 at 11:36am
  
  Question to the compiling of the Hex...
  
  Should this screen read 100% instead of 7%?
  
  Or does that reflect the space left on the device?
  
  Sorry, i am not a Arduino IDE Guru. Thanks.
  
  https://storage.ning.com/topology/rest/1.0/file/get/3702486921?profile=original