Hi Dmitri, congratulations on RadioBoss.
I tell you that using an arduino Micro, I emulate the hotkeys, so I control the air lights and the microphone.
you can see this video
https://youtu.be/s_e_grLjeBw
Cart send COM3 to ---> arduino ----> Num Lock (mic)
The arduino also sends the signal to activate the lights ...
It would be interesting, that the same mic button, send the command (in future editions) ;-)
I am at your service!!!
Thank you
Norberto Pellegrini
FM ArcoIris - Firmat, Santa Fe
Argentina