I have absolutely no idea how to do it yet, it is something I would have to spend a lot of time figuring out as I don't know where to sample the data, or even how the data in contstructed to convert it for display.
I was thinking I could do a video about it once I get to that point and get something working, maybe even design a PCB for it or something.
The display on mine is still working but very dim, so i'm not desperate enough to start that project yet in the hope I can one day find a replacement display instead, but I am pretty sure I will need to make something soonish.