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Hi guys, i'm trying to have mavlink telemetry on my 9xrpro. I use a arduino pro mini to convert mavlink to frsky between my apm and orangerx uhf RX. My problem is that when I connect ppm and gnd wires to apm, telemetry disappear on my handset, and if I unplug only gnd, it reappear and have no ppm signal on apm. I don't know how to make it work together.

You likely have a wiring/power problem so maybe make a detailed photo/schematic so people can see what's wrong.

Thank for responding kilrah, I will try to explain a little bit more. I will send picture a lunch time.

Handset: 9xr pro with last ersky9x firmware, ArduP user proto on com1 reversed, auto baudrate.

TX module: Orangerx uhf 1w with last openlrsng firmware, set to frsky telemetry with 9600 baudrate.

RX module: Orangerx 100mw with same firmware. Vcc from lypo 2s. PPM from port 6 to apm port 1, gnd to apm gnd.

Apm 2.8: serial1 set to 9600 with mavlink proto. Port 2 and 3 together to set ppm input.
Tx to pro mini Rx
Rx to pro mini Tx
5v to vcc pro mini
Gnd to gnd pro mini

D5 and D6 from pro mini to Tx and Rx orangerx receiver.

With this wiring I can't see telemetry on my handset but apm is receiving ppm signal. If I only unplug gnd between receiver and apm, telemetry works on my handset but apm can't receive ppm signal.



Envoyé de mon SM-A320FL en utilisant Tapatalk

I am not sure, but I think that with Ersky9x you don't need the Arduino converter anymore.. Just saying, I don't use this system.
Also, is the 1W tx powered by the radio's battery? I wouldn't do that as the 9XR-PRO's power switch might not cope with such current draw. It is bad, really bad. I don't use equipment that draw as much current and my radio stopped working properly. The switch contacts were as black as the night.. Had to clean them with alcohol and a toothbrush. But I don't trust it anymore.

João

Yes you are right, ersky9x can do native mavlink telemetry but orangerx must use glitsy branch of openlrsng. With converter I can have frsky rssi/tssi and mavlink telemetry. I don't have a big trust in mavlink rssi [emoji12]. As I have a lot of uhf receiver that use frsky, I would like to use a unique Transmitter and don't have to change firmware for each plane.

Envoyé de mon SM-A320FL en utilisant Tapatalk

Yes the 1w tx is powered by handset, i have always do that, never have any problems.

Envoyé de mon SM-A320FL en utilisant Tapatalk

I wish you more luck than i had then

João