Thanks Kilrah/Mike, appreciate the information.
I guess then, If I want Telemetry, which I do... and really all I want is my 9x to utilize all the wonderful information from APM/ArduPilot.
I am running er9x(mavlink flavour) or openTx(mavlink).
The problem is that I can't any flavour of something working on my 9x with Mavlink.
If I use ULRS that is just PPM with pass-thru of Mavlink for Telemetry (tried and tried and can't get the 9x to display Mavlink)
If I use XJT and X8R then that is FrSky with FrSky_Coverter (tried and tried, there are SPort solutions out there to get Telemetry) but the radio with Converter has MegaSound9x_Serial and that version of er9x doesn't support Mavlink or the data (yet).
At this point.. I have been trying to get direct connection involved of just bypassing the Tx/Rx and connected APM/ArduPilot to the Radio directly... I have not been able to get any flavour working.
I guess I am wondering if my setup is okay... with the 220ohms which I need for re-routing the Pin2/Pin3 --> Pin41/42.
and the 470ohms resistors to protect the Pin2/Pin3 as well.
Bottom line, if I use FrSky at all.. need the converter regardless.
I would feel much more comfortable if I can get direct connection working with some version of firmware that can read Mavlink. I have yet to be successful on that front.
![Sad :-(](./images/smilies/icon_e_sad.gif)