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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

- Rolf Blomgren > Brano April 13, 2014 at 10:41am
  
  I't seem like the Teensy is not reset after power on. What kind of power arrangement do you have ? i.e is there any large capacitor that makes the power rise very slow to the Teensy?
  - John Hutchison > Rolf Blomgren April 13, 2014 at 12:59pm
    
    I checked that myself and yes, it only happens when I have my Turnigy Voltage Protector plugged into the X8R. I moved it to the output rail on the APM (where it should have been in the first place), and problem solved.
    - Brano > John Hutchison April 13, 2014 at 1:44pm
      
      Hmm, thanks for confirmation. But I can't move the CPPM converter. ...guess, I'll go with the add-on reset button.
      - Richard Kennedy > Brano December 7, 2015 at 4:44pm
        
        Just reading through this thread I know it was a long time ago but did you even come up with a solution I have that problem myself.
  - Brano > Rolf Blomgren April 13, 2014 at 11:01am
    
    X8R is connected to APM through the S.BUS-to-CPPM converter. That's the only thing.
    
    I was just reading Teensy 3.1 specs and there's a Reset signal on the bottom of the board. I'm going to add another push button for reset. Or, maybe even simpler, I'm going to add little power switch on the Vcc to be able to easily power cycle Teensy.
Stephan Melchers April 9, 2014 at 2:01am

does it work also for Frsky D8R-II PLUS 2.4Ghz 8CH Receiver? if yes wich connection to rx has been made?
- John Hutchison > Stephan Melchers April 11, 2014 at 4:57am
  
  http://store.jdrones.com/mobile/Product.aspx?ProductCode=jdioboard11
- John Hutchison > Stephan Melchers April 10, 2014 at 1:16pm
  
  Would need a jD-io board from jdrones or an arduino mini pro for that to work. jDrones has a firmware that will work on either for the old hub protocol.
  - Artem > John Hutchison April 10, 2014 at 1:41pm
    
    pls advise a link to such f/w as i have an unused D4R-II which I like for its small size/ great range.
    - Stephan Melchers > Artem April 10, 2014 at 10:22pm
      
      john
      
      would be great if you provide us with the link! many thanks john