Had nearly all the parts lying around, so I put this thing together.
I wanted to add stereo speakers, but it’s hard to find good wiring diagrams for such a niche thing. So, mono for now.
The motherboard has a bad cartridge slot. So I designed and printed a custom speaker holder that fits into the cartridge slot. All pressure fitted, no glue.
Everything works so far. Just waiting for a new shoulder button/SD slot cable, so I can finish it up and load up some GBA games. :)
Quick Google search says dsi is not compatible with gba games… I hate to ruin your fun, but it was there when i googled it, on a Nintendo page
Do a little more digging on non-Nintendo pages and you’ll learn more about console modding.
Maybe they mean emulating them? (Not super knowledgable on this subject)