The NES RetroAchievements Adapter is an innovative device that brings modern achievement functionality to classic NES games. Developed by Fábio Toledo (odelot), this adapter sits between the NES console and the game cartridge, allowing players to unlock achievements in real time while playing on original NES hardware.
Key features of the NES RetroAchievements Adapter include:
Game identification through CRC checks
Real-time memory monitoring to detect achievement triggers
Internet connectivity via an ESP32 module
A small TFT display for showing achievements and game art
Integration with the RetroAchievements online platform
The adapter uses a Raspberry Pi Pico to interface with the NES and monitor game memory, while an ESP32 handles internet connectivity and communication with RetroAchievements. This setup allows the adapter to track progress and unlock achievements without modifying the original game code. The adapter has been tested with about 50 NES games, with 48 working correctly. The project is still under development, with plans to miniaturize the hardware to fit inside a cartridge-sized case, similar to a Game Genie.
For retro gaming enthusiasts interested in building their own adapter, the project is open-source, with all documentation, schematics, and code available on GitHub. However, it’s important to note that this is still a prototype, and users should proceed with caution when attempting to build and use the device.
The NES RetroAchievements Adapter represents a unique blend of classic gaming and modern features, allowing NES purists to enjoy achievement hunting on original hardware rather than relying solely on emulators.
