All required coding, testing and tweaking required for programming output parameters are finished and I made a short video about that. This first video covers all 3 input modes: Slider, Step and Keypad. The first two also have interactive/non-interactive option that gives us 5 possible input modes. They together represents a solid equivalent for the one (or combination) of standard input devices such as multi-turn potentiometer, rotary encoder or numeric keypad.
As you can see many options are still missing but the biggest obstacle - having usable screen-touch control is resolved. I didn't use stylus during the whole presentation just my finger (that is maturely thick). Now we can continue more comfortably to add everything that is already available over remote console (using SCPI commands) to the local interface and I'll try to cover progress with more videos.

Your comments are highly welcomed.