NES Radar Turns a Nintendo Entertainment System Into a Live 9600-Baud Air-Traffic Display

NES Radar transforms Nintendo's original 8-bit console into a live air-traffic display by pairing a custom NES ROM with real-time ADS-B aircraft data over a 9600-baud serial link.

A Nintendo Entertainment System from the 1980s can now be used to watch real aircraft moving through the skies in 2026. NES Radar, an open-source project by developer k6lcm receiving fresh coverage on 8 September, transforms Nintendo's original 8-bit console into a live air-traffic display by combining a genuine NES ROM with a nearby modern computer and a custom serial connection through the console's second controller port. The architecture is wonderfully mismatched. A Python application running on the computer retrieves current aircraft-position data and then sends that information to the NES at 9600 baud. The console interprets the incoming information and plots aircraft on screen. Users can enter an ICAO airport identifier such as KATL to select the area they want to observe. Live information can be sourced from ADS-B services, while the actual visualisation is handled by hardware launched when connecting a games console to an online aviation database would have sounded like science fiction. The project's limitations are equally charming. The NES Picture Processing Unit can display only a limited number of hardware sprites on a scanline and eight primary sprites are available in the project's display approach, meaning the representation of dense airspace has to respect restrictions designed for videogame characters rather than commercial aircraft. Communication is achieved by repurposing controller-port functionality into a simple serial interface. The developer's documentation also describes the cabling and software required to bridge modern USB hardware to the NES electrical interface. NES Radar follows an earlier project called c64u-radar developed for the Commodore 64 Ultimate. That machine has modern networking capabilities built around its recreation of the C64 environment, while the ordinary NES has no native Ethernet connection, forcing the new project to solve the problem in a more entertainingly old-fashioned manner. This is not the first time vintage hardware has been used for modern connected applications, but projects like NES Radar demonstrate why retro computing remains an active technical hobby rather than simply a collection of old games. Developers are learning the electrical interfaces, memory restrictions and video hardware of machines whose commercial developers retired decades ago, then connecting them to data sources those machines were never designed to understand. Nobody needs an NES to monitor aircraft when a phone can display a vastly more detailed map in seconds. That is entirely beside the point. Making a 1980s console do something absurdly contemporary is precisely what makes the project interesting.