I’m in the process of setting up my new Matek H743-Wing and am experiencing a crash when connecting to Bluetooth in Mission Planner.
Here is my setup/testing:
TBS Crossfire Nano receiver connected to Matek H743-Wing on UART7 (telem1/serial1). Note that this is the only connection from the receiver to the FC (aside from power and ground, of course).
Receiver set that the only two channels going to the FC on UART7 are both Mavlink Rx and Tx channels.
“RC by Mavlink” turned on on the receiver.
When connected to the FC in Mission Planner over USB, I see RC input from the transmitter, so I know the Mavlink connection is working.
Problem: When I attempt to connect to Bluetooth on COM5 Standard Bluetooth over serial (at 57600 baud), I get “Mavlink connecting”, which will almost always just freeze Mission Planner, rendering it unresponsive. Even if I leave it for a while:
I believe this issue is specific to Mission Planner. If I instead open up QGroundControl, I can connect over Bluetooth and QGroundControl updates as I move the flight controller around:
Thanks for the response @Michael_Oborne. I was really excited about such a simple potential fix, but alas, this is already unchecked:
After I posted this, I disabled “RC By Mavlink” on the Crossfire Nano Receiver, and was able to connect in Mission Planner for about half an hour; all parameters were pulled and the built-in HUD had a decent refresh rate. Then, I lost connection and couldn’t get it back.
Now, I’m stuck in the same place again with Mission Planner freezing while attempting to connect over Bluetooth.
Periodically, I can get Mission Planner to start to connect again if I restart my transmitter, FC w/ receiver, and immediately launch Mission Planner. However, it still often hangs and freezes:
Pairing a serial BT device (like the the Crossfire Transmitter) in Windows 10 creates two COM-port’s.
Have you already tried to connect MP with the other COM-port.
I’ve noticed that too. (I actually end up with Crossfire showing up as two separate devices when in Bluetooth discovery mode in Windows; which one ends up being the luck of the draw).
COM5 - Crossfire 0851 ‘AMP-SPP’ seems to be the only one that “works” for me; and it usually doesn’t work very often, all the time, or very long.
Unfortunately, I’m becoming very concerned that Crossfire’s Bluetooth connection will just never work with Ardupilot/Mission Planner and that I’ve wasted $250, but sporadically I get reports of other people saying it works just fine for them that gives me hope. The fact that very occasionally, I can get Crossfire to connect over Bluetooth to Mission Planner and everything (parameters included) load perfectly is driving me insane; I wish I could make it work consistently.
Do you have Crossfire working with Mission Planner consistently?
