This Frankenstein PlayStation PCB reads games from microSD and outputs video over HDMI
Foto: Engadget
Power consumption of less than two watts and a size smaller than the motherboard of the legendary PSOne model—these are the key specifications of the "Frankenstein" console created by a YouTuber known as Secret Hobbyist. The PlayStation Hybrid project is a custom PCB that combines the most desirable components from various revisions of Sony's first console, creating a device nearly ideal for the modern consumer. The design integrates an energy-efficient CPU and GPU from later versions of the console with the iconic Asahi Kasei digital-to-analog converter (DAC), prized by audiophiles for its exceptional sound quality. However, the key innovation is the full integration with X Station, allowing for instant game loading from microSD cards, and the use of an FPGA chip from Hispeedido for native video output via an HDMI port. For the global creative community and retro-gaming fans, this is a signal that the line between restoring old hardware and designing custom electronics is finally blurring. Such low power consumption paves the way for a fully functional, miniature handheld console that not only supports a library of classics without a failure-prone CD drive but also works seamlessly with modern monitors and 4K televisions. This project proves that, thanks to custom PCBs, 30-year-old technology can become more efficient and portable than ever before.
In the world of retro-tech, hardware modifications have ceased to be the domain of hobbyists replacing capacitors and have become a form of advanced engineering. While most projects focus on refreshing classics by adding IPS screens to the Game Boy Advance or installing USB-C ports, the PlayStation Hybrid project by a YouTuber known as Secret Hobbyist pushes the boundaries of what is possible. This is no ordinary mod — it is a custom, designed-from-scratch motherboard (PCB) that combines the best features of various iterations of the Sony console, creating a "Frankenstein" that surpasses the originals in every respect.
The key to the success of this project is a selective approach to the history of Sony hardware. Between the launch of the first PlayStation console in 1994 and the debut of the smaller PSOne model in 2000, the Tokyo giant repeatedly changed the internal architecture of the device. These changes were not always for the better — often the motivation was to reduce production costs. Secret Hobbyist decided to reverse this process, selecting components from different revisions to create the ultimate version of the 32-bit legend.
An engineering marriage of PM-41 v2 and PU18
At the heart of the PlayStation Hybrid project is a combination of elements from two vastly different motherboards: the PM-41 v2 (from the compact PSOne model) and the PU18 (known from the classic "fat" PlayStation model). This choice was not accidental. The processor (CPU) and graphics chip (GPU) were borrowed from the PSOne model, which are characterized by significantly higher energy efficiency than their older counterparts. Thanks to this, the entire construction consumes less than 2 watts of energy, opening the way to creating a fully functional portable console.
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On the other hand, the architecture allowing for integration with X Station was taken from the PU18 model. This is an optical drive emulator (ODE) popular in the modding community, which replaces the CD reader and allows game images to be read directly from a microSD card. This solution eliminates the most failure-prone element of the original console — the laser — and drastically speeds up loading times while maintaining full hardware compatibility with the PlayStation library.
Audiophile sound and modern picture
One of the most fascinating aspects of the project is the restoration of the legendary digital-to-analog converter (DAC) from Asahi Kasei. Early PlayStation models, such as the SCPH-1000 and SCPH-3000, were held in high esteem by audiophiles precisely because of this component, offering sound quality comparable to high-end CD players. Sony abandoned it in later models to reduce costs. Secret Hobbyist decided to implement it in his hybrid PCB, combining retro sound purity with modern video standards.
- HDMI Support: Integration of an FPGA chip from the Hispeedido mod kit enables direct video output via HDMI.
- Compact Dimensions: The entire motherboard is smaller than the original PM-41 v2 PCB, which is a major engineering achievement.
- Low Power Consumption: The device operates at a level below 2W, which is a fraction of the requirement of original units.
- Modern Storage: Thanks to X Station compatibility, games are launched from fast microSD media.
To meet the requirements of modern televisions, the designer integrated an FPGA chip from the Hispeedido kit. Thanks to this, the console does not need external converters or scalers to generate a clean digital image directly through the HDMI connector. This is a crucial change, as original PlayStation analog signals often look very poor on modern 4K panels without expensive signal processing.
A new direction for the retro-modding scene
The Secret Hobbyist project is more than just a curiosity for electronics fans. It is proof that we are approaching a point where original console shells will become merely an optional package for much more advanced, proprietary designs. Although the creator has not yet presented the final case for his "Frankenstein," the potential within such a small and energy-efficient PCB is enormous. The ability to power a full-fledged PlayStation console from a power bank or lithium-ion battery suggests that we may soon see the most refined version of a portable PS1 in history.
"Creating your own PCB that not only replicates the functions of the original but fixes its design flaws and adds modern interfaces is the highest level of initiation in modding."
It is worth noting the precision of the soldering and trace design, which allowed components from two different PlayStation eras to be packed into a surface smaller than a palm. PlayStation Hybrid proves that instead of software emulation, which always involves certain imperfections, the future of retro-gaming may belong to hybrid hardware — using original processors and logic circuits in a modern, optimized environment. This approach guarantees 100% compatibility with games while offering comfort that gamers in the 90s could only dream of.
Looking at the pace of development of projects like this, one can hypothesize that the era of "refreshing" old consoles is slowly giving way to an era of their "redefinition." Secret Hobbyist didn't just fix the PlayStation — he rebuilt it from scratch, extracting the essence of what was best in Sony's architecture throughout the console's entire decade on the market. The next step in the development of this technology will likely be full miniaturization and integration with modern wireless standards, finally blurring the line between classic hardware and contemporary consumer electronics.
