OSD display through radio, it is a solution for connection between VTX and flight control board., which is
very simple and direct way.
For using this function, please connect RXD on VTX to TXD on UART3 or UART6 of flight control
board first, turn on SmartAudio function on flight control board as the following:
Then enter set up mode according to guided message on OSD, and enter set up menu for VTX, VTX
will save the data automatically as soon as the setup is effective(red and blue LED flashes 6 times in turn).
