
because everyone is doing it I'm going to post my progress too.
Stuff
I want to take my time and make everything easily replaceable, so no hot glue.
It will be a setup with a kitsch 4 button board, pi zero, usb sound and powerboost for power/battery/charging.
Part 1 - Display
I filed the border in the Gameboy case for the display instead of using a Dremel, that worked great.
To mount it I used 3M VHB which saves a lot of room around the display (making place for the button board) and hold really really well.
I'm sure I will use it for other parts too.
I went to the WIKI and ordered the BW 3.5 Variant 1 from Amazon. I got Variant 7 instead, which is great! It only needs a extra wire and the board is really small.
It has a separate Button Pad and i decided to mount it over the display, making holes for the buttons in the case. It mounted using some felt pad material and pressed between case and display. Surprisingly it holds really really well and doesn't move at all.
I tested the display with my WII and the quality is really nice and settings are now easily adjustable.