Pixhawk4 telemetry using two HC12 modules is not working

[Gediminas (Gediminas Gresevicius)]

Hello,

I struggle to connect to Pixhawk 4 via telemetry port using two HC12 modules.

I found two sources about this is possible:

HC-12 Telemetry Getting Params not working

They are very simple stuff. They send and recieve serial messages without any acknowledgement. Kinda like UDP packets. If the reciever recieves it then it goes through. If it cannot the packet is dropped. If a dropped packet can result in a disconnect from mission planner i don’t think they reconnect. But from what i’ve seen is when they get out of bounds you just start getting less and less packets. No sudden loss of connection. Also they are (to my knowledge) only configured through AT command…

APM Flight Controller DIY HC 12 Serial Telemetry Module for Mission Planner Waypoint Mission

Not a Pixhawk4 in all cases, but in principle it is possible.

Modules are in the same channel, baudrate 57600 and I can get serial connection on com ports with them successfully. But no success to get connection with Mission Planner.

Holybro telemetry radios connect with MP on both Telem1 and Telem2 serial ports. Boud rate 57600. Not sure if it is not possible to get connected with Pixhawk4 using HC12 modules, or if my parameters are not correct?

Any thoughts?

My parameters as per attachment.
standartiniai.param (18.2 KB)