The cool thing about the Gameboy Advance is that, aside from playing games, you can use it to do all sorts of other things. One devoted person modded theirs into a fully functional GPS unit. It turns out that all you need is a GBA, a GPS device with a serial out, and a flash cartridge for the Gameboy Advance. The software used to do the mod is all free. Nice!

(Thanks Gohan!)

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