We’ve found another exciting project you can try with your Raspberry Pi 4: a fully functional mini PC system with a built-in display capable of running retro games like DOOM.
Despite the launch of the Raspberry Pi 5 with its powerful specifications and variants like the 16GB model, the Raspberry Pi 4 remains a highly versatile option for many projects. And this one, in particular, is sure to bring back waves of nostalgia. The Pi Box is an all-in-one Raspberry Pi 4-based mini PC with an internal power supply and a stunning 5″ IPS display. It can double as a desktop computer or a portable game emulator station.
Not only does it run retro games, but it also captures the essence of the 90s with its bulky, 3D-printed design that mimics the look of a CRT TV. While it might appear unconventional in other contexts, it perfectly complements the retro theme here. The Pi Box features a 5″ display, a robust battery pack, and excellent connectivity options, thanks to the Raspberry Pi 4’s extensive support. Let’s dive into the specifications packed into this impressive mini-computer.
Pi Box specs
Starting with the most crucial component, the Raspberry Pi 4 powers this build with a quad-core 1.8GHz processor, up to 8GB of RAM, and dual 4K monitor support via micro-HDMI ports making it a strong choice for enthusiasts even today. It also boasts extensive connectivity options, including Gigabit Ethernet, dual-band Wi-Fi, Bluetooth 5.0, two USB 3.0 ports, and two USB 2.0 ports. Advanced multimedia capabilities, such as H.265 video decoding and OpenGL ES 3.1 support, further enhance its versatility.
- Custom PCB (Provided by HQ NextPCB)
- Raspberry Pi 4 Model 4GB
- DFROBOT 5″ IPS Display for Raspberry Pi
- IP6505 IC
- 22uH SMD Inductor
- 10uF Capacitor 1206 Package
- 22uF Capacitor 1206 Package
- M7 Diode SMC Package
- LED 0603 Package
- 1K Resistor 0603 Package
- Battery Pack Circuit (from a previous project)
- 12V/4A Adaptor
- M3 HEX PCB standoffs
- M2 Screws
- 3D Printed parts in dual colour (white and orange)
- Rocker Switch
For the display, the Pi Box features DFRobot’s 5″ 800×480 IPS screen, designed for the Raspberry Pi’s DSI interface. It includes a capacitive touch panel supporting up to 5 touch points and offers an 80-degree viewing angle on all sides. The display delivers vibrant visuals with RGB888 color depth, 16 Mega True Colors, and a 60Hz refresh rate. Optical bonding improves brightness and clarity, while anti-fingerprint and anti-glare coatings enhance usability in different lighting conditions.
Powering the system are three 3.7V, 2900mAh lithium cells, housed in a setup managed by a battery management system (BMS) circuit for safe charging and discharging. The cells can be charged via a 12V adapter through a DC jack and diode, ensuring a reliable and efficient power supply. The device’s battery backup can run for more than one and a half hours but you can also put in a larger capacity battery pack and use it for a whole day.
A perfect retro gaming emulation station
The above are just some of the key specifications of the Pi Box, and there’s much more happening beneath that yellow-and-white box. You can learn more about it in the official Hackster.io guide, which also provides a step-by-step breakdown for building one yourself. That said, the Pi Box can serve various purposes, including being used as a retro gaming emulation station. This can be achieved with Recalbox OS, a retro game emulation system that supports a wide range of consoles, including the GameCube, PS1, PS2, and Xbox.
The best part is that thanks to the Raspberry Pi 4’s Bluetooth support, you can link your controller for gaming or connect devices like a keyboard using the USB port. The potential for creativity is huge with this setup, and once you get the hang of things, you can make adjustments to this mini PC to customize it exactly how you like.