I can also recommend the GBCart shield - https://www.tindie.com/products/insidegadgets/gameboy-cart-shield/ https://www.tindie.com/products/insidegadgets/gamebo

I can also recommend the GBCart shield - https://www.tindie.com/products/insidegadgets/gameboy-cart-shield/ https://www.tindie.com/products/insidegadgets/gameboy-cart-s.... I've got the newer reader listed on the site but haven't had a chance to test it yet. If you need a hand dumping games, let me know.