I want to connect a custom build module to my pixhawk.
The idea is that the module sends data to the pixhawk and the pixhawk uses the telemetry radio to forward the data to the groundstation.
I couldn't really find good resources on how to start with this.
My questions are:
What ports can I use (UART, CAN or something else) ? The module uses tx, rx, Vin, and Ground
Where to start with the firmware programming? Has something similiar been done before?
Can someone point me in the right direction please?