As I've said an addon board for that purpose will be released but only after I manage to finish and launch V.3 of the spectrum analyzer. Now about learning how to make something like that, it depends on your current level with electronics, do you have any knowledge of microcontrollers, how they work ? Digital signal processing sounds familiar to you ? If the answer to both of this questions is no, its hard to say where to start.
The hardware assembly can be easily learned with some practice sessions and I'll probably release some tutorials on how to do "a big display" for the spectrum analyzer, but that again only after I launch V3.
Not sure if its going to be ready by the end of August, I'm working but often problems occurs and it takes time to solve them. I know people are waiting on these so I'm doing my best to finish them as soon as possible.
I mentioned prototype boards: these are the first boards that I make from a design and they are used for R&D.