How hard would it be to put a Raspberry Pi 3 inside of a DS Lite case?
>>58124817
very easy
>take case
>place raspi in case
>>58124843
Button configuration
>>58124817
Look for yourself. He had to enlarge the top portion to fit the top screen in the build.
Clamshell cases, an rpi do not make.
Apparntly zeros fit nice in original GBA cases and Gameboys... especially gameboys, being nice and roomy.
You could do it with an orangepi much easier as they offer boards with far smaller dimensions
https://learn.adafruit.com/pigrrl-zero/overview
I'd suggest starting here and working backwards