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...

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Artem & Andrew, what is the fw version on yours Taranis? just to compare...

mine is 2940

Press and hold  menu on your Taranis and then Page until you see the sreen Version

There it should be something like this:


SVN: opentx-r2940

That is the newest FW that Companion downloaded for the Taranis. Build on February 2, 2014. To my knowledge there is no newer stable FW out there as of yet. I will reflash it and see if it fixes the problem


not at home so cannot reply right away, be back with info tonight.

Can you give me an example of GPS coordinates from your part of the world..


please see the attached picture. I am in Toronto Canada



I simulated your coordinates Lat 43.39,7740N Long 79.27.2286E on the Teensy and the Taranis shows these coordinates without a problem on my Tx.

I guess we have to see if it's works on your's after you have reflashed.

Re-flashing did not help. Keep getting the -255 degrees. Flew today in a different park.

That may be an OpenTx problem of the new firmware. Maybe I should open an issue there

Hey all,

Forgot to update this thread, but I launched the MAVBoard indiegogo project a few weeks back. 12 days left to back it: http://www.indiegogo.com/projects/mavboard

I've already started porting Rolf's code to the MAVBoard thanks to a friend who let me borrow his Taranis. The serial port is tricky because its a single wire for both Rx and Tx, but the Arduino SoftwareSerial library seems to handle it ok. I have heading showing up on the Taranis now. Should be able to get the whole port done in the next week or two.

Try with my:


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