RFD900x connects but does not connect

QGroundControl
1

Using QGC with cube orange plus loaded with PX4 v 1.61

I have an RFD900x that is on a tripod, the USB cable is connected to my desktop.

I have a fixed wing plane with an RFD900x. I have configured all of the fixed wing plane with the exception of a SDP3x airspeed sensor failing to calibrate.

This fixed wing plane has flown many times using Mission Planner, cube orange plus and ardupilot. The build is solid, it works fine.

I know the two RFD900x’s are talking to each other because I can see the green power light on and I can see the orange data LED blinking. I also downloaded the RFD900 tools from the company and was able to get the two radios to handshake and agree with each other that they have the same versions (3.57sik) and net ID of 26, all other settings are identical. The radios work.

I fire up QGC. I fire up the plane. The fixed wing plane’s ESC completes its happy song correctly. The Cube Orange Plus completes its happy song too. The HERE3 module then permanently blinks red. This is probably because I am indoors and it can’t get GPS lock for awhile.

I am now looking at QQC. It looks like this:

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It does NOT autoconnect.

So I make a new connection:

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I know COM 9 is correct and I know 57600 baud is correct. I also know the NET ID is 26 on both radios (see above explanation)

I manually make the connection (even though Sik Radio AutoConnect is ON) and I see this:

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I do not get a connection to the fixed wing plane, why not?

2

Solved this by doing this:

Configuring TELEM2 in QGroundControl

  1. Connect your PX4 vehicle to QGroundControl.

  2. Go to Parameters and search for MAV_1_CONFIG.

  3. Set MAV_1_CONFIG to TELEM2.

  4. Search for SER_TEL2_BAUD (or MAV_1_BAUD) and set it to your desired baud rate (e.g., 921600 for companion computers, 57600 for typical telemetry radios).

  5. Reboot the flight controller.

PX4 does not come with any Telemetry port preconfigured to use telemetry, you must go into the parameters and set them up from the get go. I was not able to find the source that a google AI search was able to find in order to tell me how to set the parameters, i.e, the list of steps above.

Lost 4 days trying to figure this out.

3

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