Taranis battery compartment serial port

Hardware help and support for the FrSky Taranis
Post Reply
cshunt
Posts: 7
Joined: Thu Jan 01, 2015 11:32 pm
Country: -

Taranis battery compartment serial port

Post by cshunt »

I am trying to get data from the serial port. It appears to be sending a string but many of the characters are giberish.
I was following the work on this post viewtopic.php?f=97&t=6022&start=30. and tried to connect to the frsky dashboard app in the android market using a bluetooth modual with inverter but haven't hand any luck.

Does anyone else have experience connecting to this serial port?
I have tried an ftdi device with rx inverted, a rs232 usb serial port and have the same results.
Port speed is 57600 inverted from ttl.
Using putty to read the serial line.
when not inverted it fills the terminal with empty characters, when inverted, one line updates but the characters are not readable.

I would ideally like the gps data on the transmitter to be sent via bluetooth to the laptop/tablet.

Thanks for any interest.
Cody

User avatar
Kilrah
Posts: 11109
Joined: Sat Feb 18, 2012 6:56 pm
Country: Switzerland

Re: Taranis battery compartment serial port

Post by Kilrah »

When the serial port is set to "S.Port Mirror" mode in the hardware settings it forwards all telemetry information received from the module.
BUT it is in "native" binary smart port format, not the old D-series format. AFAIK dashboard apps don't support it at this point, so you'd have to write a decoder, possibly based on the OpenTX code.
I think someone has already done that though, not sure if he's shared his work.
User avatar
dinamich
Posts: 288
Joined: Mon Apr 01, 2013 1:21 pm
Country: Slovenia
Location: Ljubljana

Re: Taranis battery compartment serial port

Post by dinamich »

Some usb to rs232 converters won't like the voltage levels that Taranis gives on this port. It outputs 0 volts for logical 1 and 3 volts for logical 0. Have you read https://github.com/opentx/opentx/wiki/T ... erial-port
projectkk2glider@github
cshunt
Posts: 7
Joined: Thu Jan 01, 2015 11:32 pm
Country: -

Re: Taranis battery compartment serial port

Post by cshunt »

Kilrah wrote:When the serial port is set to "S.Port Mirror" mode in the hardware settings it forwards all telemetry information received from the module.
BUT it is in "native" binary smart port format, not the old D-series format. AFAIK dashboard apps don't support it at this point, so you'd have to write a decoder, possibly based on the OpenTX code.
I think someone has already done that though, not sure if he's shared his work.
Thank you for the response. I think this is what I'm seeing, it makes sense. I will take a look around. I was happy to get the connection working over bluetooth with the module fitting in the compartment.


dinamich wrote:Some usb to rs232 converters won't like the voltage levels that Taranis gives on this port. It outputs 0 volts for logical 1 and 3 volts for logical 0. Have you read https://github.com/opentx/opentx/wiki/T ... erial-port
I was treating the signal out as if it were 3.3volt. I did find a nice trick to change a setting on the ftdi chip to invert the rx line. located on this post http://diydrones.com/profiles/blogs/frs ... -ftdi-cabl this let me use one of the arduino boards as a usb serial port that was good for the low voltage.

I followed this diagram and was able to put it all on the hc-05 bluetooth module and get it transmitting the same as the ftdi connection.
Image
Swifterone
Posts: 24
Joined: Wed Aug 13, 2014 4:26 am
Country: -

Re: Taranis battery compartment serial port

Post by Swifterone »

See this thread for general info and hardware, and this GitHub project for software

viewtopic.php?f=97&t=6022

Taranis Telemetry Translator
http://www.github.com/Swifter/TaranisTelemetry

I have a later version of the software not published that sends Mavlink packets to QGroundControl

Post Reply

Return to “FrSky Taranis radio”