Gamer Builds World’s First Hybrid PlayStation Console Capable of Loading Games from microSD Cards

A gamer known as Secret Hobbyist spent months designing and testing a custom circuit board that combines the best parts of two different PlayStation models into a single hybrid console, one that loads games from a microSD card and outputs video over HDMI to any modern display.

The build incorporates components from two different PlayStation boards: the PM-41 v2 from the small PSOne and the previous PU-18 from the original console. The PSOne contributed an efficient processor, graphics chip, and compact memory components that run cool and use less power. The previous board included a digital to analog audio converter, widely regarded as one of the best sounding alternatives of the time, as well as the special compatibility required to function with an XStation module, which completely replaces the disc drive and allows games to run directly from a microSD card.

Combining everything required a whole new four-layer circuit board measuring 85 by 73 millimeters, which is smaller than the PSOne board it largely replaces. Every connection had to be precisely routed to keep the different chips communicating cleanly. The video conversion is handled by a field programmable gate array chip from a Hispeedido modification kit, with options for 480p for a vintage look or 1080p for a clearer image on larger displays, as well as an optional scanline filter for those who want the original CRT experience. Audio passes through a high-quality converter before being routed to an HDMI port or separate jacks.

Assembly needed a hot air soldering iron and a steady hand, since tiny surface mount components were positioned on both sides of the board. At three volts, the finished device uses less than two watts, making a battery-powered version a viable option in the future. Although no enclosure is currently available, the clean architecture allows you to envisage how everything might fit perfectly inside a compact box. Testing confirmed fast load times from the microSD card across a wide range of titles, with stable picture quality on modern flat panel displays and none of the flicker or color issues that come with older composite connections.
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