I’m trying to set up two telemetry connections on a Matek F405 CTR running copter 4.0.3, but I’m having luck with neither.
Telem1 is wired to a V2 SiK telemetry radio from an old pixhawk 1 kit. I’ve connected the radio to the tx/rx1 on the Matek, which should be Serial1 = Telemetry 1 in Arducopter. I verified that my Serial1_Protocol is set to Mavlink1, and changed it to Mavlink2 since I plan to use some features not in the older protocol. The radio powers on and quickly establishes a link with the GS radio (steady green LED), but QGroundControl doesn’t connect (tried on Windows and Mac). Same system connected instantly with Pixhawk.
Telem2 is going to a raspberry pi with mavproxy configured (for wifi control of the FC). I’ve wired tx/rx2 to the Pi’s GPIO 15/14 (making sure to cross the tx->rx and vice versa) and verified that Serial2_Protocol is mavlink2. Again this worked great with my pixhawk. The raspi gets power and boots, but no connection to the FC can be found.
I can connect via QGroundControl over USB just fine.
What am I missing?