How can I send custom message at baud rate 115200 to the UART port of Pixhawk? I would like to send a command such as “D20” to the UART4 of my Pixhawk through a computer through pymavlink.
I have been looking at UART_BRIDGE but that seems to be for bridging the Mavlink protocol through different PHY layers.
Have you thought of using Sik Radio Telemetry / an LUA script (send D20)?
So, the application should not be for UA, right? Rover or Boat?