Things are getting to move! I finished my Engineer degree, so now I hope in plenty of free time during holidays.
The RIGOL scope also arrived, so I hooked almost everything to it and studied all possible signals around me :)
Now I'm creating decoder of infrared protocol. I started this project because of need to turn on the HTPC with my infrared remote control. But after the basics I was thinking that maybe I can add support for another protocols, make the PC start impulse programmable, send infrared codes to the computer over UART, handle and program long button press, add support for different crystals and clock speeds.... :)