Taranis X9D Telemetry values.

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HWal
Posts: 11
Joined: Fri Jan 10, 2014 9:06 am
Country: Norway
Location: Bergen

Taranis X9D Telemetry values.

Post by HWal »

Hi, This relates to X9D Tx and X8R Rx. opentx version 2.3.14.

I have made a sensor based on Arduino Pro Mini 3.3V/8MHz, with u-blox gps and two ms5611 barometers for vario, airspeed and altitude. Code is based on telemetry library by Pawelsky, using S.Port. Things seem to work nearly ok, meaning discover sensors does not stop discovery after all sensors are found. So I have to stop discovery after a couple of seconds and delete those that are duplicates. I have been able to stop discovery with all values registered and no duplicates, but that is hit and miss.

Values from the telemetry screen config screens (sorry I couldn't space everything properly):
GAlt 227 ID 0820 4 Source Internal module
Hdg 227 ID 0840 4 Source Internal module
GPS 227 ID 0800 4 Source Internal module
GSpd 227 ID 0830 4 Source Internal module
Date 227 ID 0850 4 Source Internal module
Alt 224 ID 0100 1 Source Internal module
VSpd 224 ID 0110 1 Source Internal module
ASpd 233 ID 0A00 10 Source Internal module
RSSI 248 ID F101 25 Source Internal module
RxBt 248 ID F104 25 Source Internal module

Question #1: What are the values 227, 224, 233, 248 ?

I can live with the duplicate discoveries as long as telemetry otherwise seems ok. However, I have tried to manually configure the sensors via the Tx, but the Source field was prohibited, and pre-filled with "Internal".

Question #2: Should I be able to configure these telemetry sensors manually? And where does 224, 227, 233, 248 come to use?

Thanks, Helge.
Last edited by HWal on Mon Feb 28, 2022 10:31 pm, edited 2 times in total.

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Kilrah
Posts: 11108
Joined: Sat Feb 18, 2012 6:56 pm
Country: Switzerland

Re: Taranis X9D Telemetry values.

Post by Kilrah »

- Discovery never stops by itself
- There should not be duplicates, if there are either the sensor has timing issues or there's an issue with the library/implementation
- The number is the source (module/receiver) the sensor was received from.
HWal
Posts: 11
Joined: Fri Jan 10, 2014 9:06 am
Country: Norway
Location: Bergen

Re: Taranis X9D Telemetry values.

Post by HWal »

Thanks, I suspected issues that I need to look into.

Please allow one more question: What/where are the numbers (224, ....) generated?

Thanks, Helge.
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Kilrah
Posts: 11108
Joined: Sat Feb 18, 2012 6:56 pm
Country: Switzerland

Re: Taranis X9D Telemetry values.

Post by Kilrah »

They're basically bits that say whether the sensor was received from the internal or external module and which receiver from each module. It's there mostly for the FrSky ACCESS system that can receive sensors from multiple receivers at the same time and thus there needs to be a way to differentiate them.
HWal
Posts: 11
Joined: Fri Jan 10, 2014 9:06 am
Country: Norway
Location: Bergen

Re: Taranis X9D Telemetry values.

Post by HWal »

Thanks for your help!
Helge.

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