The cartridge flasher is an interface for a PC to interact with a GameTank cartridge over USB. This tool is designed as a “shield” board that stacks on top of an Arduino Mega 2560 which has enough GPIO pins to connect to the cartridge directly without additional components.

All that's needed to build the Cartridge Flasher is:

• Arduino Mega 2560
• Cartridge Flasher PCB
• Edgeboard connector with 36 contacts and 0.1“ pitch that accepts 1.6mm thick cards.