Thanks! I ended up connecting to the TELEM port. Communication seems to be working although I haven’t yet implemented everything I want to just yet.
You haven’t encountered any problems actually flying with the USB port connection? I have seen warnings against this in a few places…not exactly sure why, but I’ve heard the USB connection can be less reliable (maybe more susceptible to vibrations?).
It sounds great that you succeed. Actually, I haven’t met any problem using USB port for communication.
As you said, USB connection can be less durable due to vibration, but I haven’t met any problems.
Anyway, can you tell me how you connected TELEM port briefly? What cable do you use for wiring? One end is for Mini and the other end is USB port for PC. As I remember, 3DR does not supply that cable. I will appreciate if you can tell me where you got the cable. Thank you.
I use an FTDI cable that I think I ordered from that link. USB goes into the Pixhawk Mini and the other end (after some rewiring) goes into the TELEM port (note you can see the pin outs for the TELEM port here. If you need any clarification on anything please let me know, happy to help.
Do you have any experience sending MAVLink messages with custom C/C++ code, or have you been using MAVROS?
In a related question, I am trying to connect a 915 MHz telemetry transmitter to the TELEM channel. But the cable that came with the telemetry Tx does NOT fit into the small tan connector. What cable is needed for this?