I made a cart dumper for the stm32f103c8t6 blue pill boards using the libmaple-based Arduino core and my USBComposite library. The fun thing about this cart dumper is that it emulates a flash drive, so when you plug it into a USB port, you get a GAME.A26 file you can load into an emulator right from the dumper--you don't need to copy it or anything.    Currently, it only supports 4K, F6, F8 and FA cartridges.   One thing I haven't been able to figure out is how to recognize w