Still very much a work in progress but it works reasonably well (about 8ms of lag). I want to ultimately create an easier to install PCB rather than the perfboard I used.
An image of the inside
This is awesome, how did you come up with the idea?
Thanks. I was looking at these carts and thought about hard it would be to make something similar that you could use a old shell with. I recently made a SNES to Bluetooth adapter so the code was pretty similar. I really like projects that recycle parts like this.
Why not an old gba? More buttons, nicer from factor.
Space and simplicity. There is not a lot of room in a GBA so a custom PCB would probably be needed from the start. Also the DMG display PCB is basically trash if the screen dies, which is all you need for this project. The GBA equivalent would need a donor motherboard.