oh, sorry for my english yesterday, in fact, usualy I don't speak that bad.
I have been googling for DIY controllers, looking like those I posted in here, but I coun't go further, I coun't find any, the only thing I found was a circular graph which can be really helpfull.
I though on a PIC, but those controllers and 16 bit shift register for the communication with the displays, but it would require a lot of cicles and for sure a huge time. The controller I am planning has 8 sliders, 8 rotary encoders, 16 switches, 16 series of 16 LEDs, and 2 alphanumeric LCD. a huge and expencive project for sure
I know, and still at the begining ... lol.
I though that a uController could send a 16bit data for a pararell/Serial converter (8bit) and the remaining to a demultiplexer, then, the serial data sould travel to each shift register while the knobs should send data to the pic and this via USB to the computer. maybe this should be the best way, if there was not the first pararell / serial converter, the pic should be alway sending data, this way, the ucontroller can receive and transmit for other place, it could be even faster.