This Miniature Raspberry Pi Data Center Fits in the Palm of Your Hand

What would you do with your own computing cluster? Some people use them to host file servers, back up important data, or run websites from home. Others see them as a playground for experimentation. A cluster can be a great way to explore technologies like Kubernetes, run local AI models without relying on cloud services, or provide the computing resources needed for personal development projects.

The problem is that building a cluster of your own is usually expensive. Between the cost of the hardware, networking equipment, storage, and power consumption, the price tag is often enough to keep the idea firmly in the realm of wishful thinking. But as Michael Klements demonstrated, personal computing clusters are within reach for most of us — with the right selection of components. And as it turns out, they can look pretty amazing as well.

Klements recently built a four-node Raspberry Pi cluster that packs a significant amount of computing power into an enclosure small enough to fit in the palm of your hand. Rather than settling for the usual collection of exposed circuit boards and tangled cables, he designed a custom chassis that gives the project the appearance of a miniature rack-mounted data center.

The cluster combines two Raspberry Pi 5 boards and two Raspberry Pi 4 boards. A dedicated five-port network switch is tucked beneath the nodes, allowing the entire system to function as a self-contained computing platform with just a single network connection to the outside world. Power is supplied through a single 5V source connected to an XT60 connector, eliminating the need for multiple USB power adapters.

Each Raspberry Pi is mounted on an individual acrylic sled that slides into rails inside the enclosure. This allows a board to be removed for maintenance or replacement without disassembling the entire cluster. The design also accommodates Raspberry Pi 3, 4, and 5 boards, making future upgrades straightforward.

The enclosure was designed in Fusion 360 and manufactured on a Makera Z1 desktop CNC machine. Black acrylic forms the structural portions of the chassis, and tinted gray acrylic panels provide windows into the interior. Decorative aluminum side handles and engraved node labels complete the miniature server aesthetic. A chemically bonded acrylic frame keeps everything rigid, while a removable top panel provides access to the hardware inside.

A 4.3-inch portrait touchscreen mounted on the front panel serves as the cluster's status display. Connected directly to the primary Raspberry Pi 5, it runs a custom cyberpunk-inspired dashboard that shows real-time system information including processor load, memory usage, storage activity, and network statistics. A single 60mm fan mounted in the top panel provides cooling for all four nodes.

What once would have required a shelf full of equipment can now be condensed into a polished desktop system that looks as good as it performs. Whether it ends up running Kubernetes, local AI workloads, or something entirely different, it is a great example of what makers can achieve with a modest budget.