This $172 Raspberry Pi Handheld Doubles as a USB Keyboard

The Raspberry Pi Compute Module has always been more useful as a component than as a standalone board. Stripped of the standard ports that make the full-size Pi easy to reach, the CM5 was designed to disappear into purpose-built hardware, doing exactly what a system needs it to do in exactly the space available. That modularity invites projects, and Pi handheld computers have been a natural expression of it for years. Most of them never quite cross the line from capable experiment to genuinely polished device.

The piBrick Pocket-CM5 is an open-source hardware project that comes significantly closer than most. Built from a custom PCB designed for manufacturing at JLCPCB, a 3D-printed shell, and a parts list that totals around $172, it lands at smartphone proportions, 80mm x 145mm x 19.6mm, with the kind of feature density that makes it credible as a daily carry tool rather than a desk ornament.

Designer: Ahmad Amarullah

The display is a 3.92-inch AMOLED panel running at 1080 × 1240 pixels and 90Hz, with 560 nits of brightness and capacitive multitouch for up to five fingers. A custom Asahi Tempered Glass cover sits over the top, which is the kind of detail that separates a considered design from a prototype that happens to work. Full-size and micro-HDMI outputs mean the same device can drive an external display, when a keyboard and mouse are more useful than a pocket-sized one.

That keyboard is a BBQ20, a compact QWERTY design with an integrated trackpad derived from the BlackBerry layout. Side rotary encoders and five user-programmable buttons extend the input options beyond a standard phone form factor, giving the device a tactile depth that touchscreen-only handhelds don’t have. The battery is a 5,000mAh LiPo, and the USB port set covers both USB 3 and USB 2 in Type-A and Type-C configurations, plus an internal expansion header for add-on modules.

One of the more quietly useful features sits at the intersection of the keyboard and the USB stack. The BBQ20 can operate in USB-HID mode, which means plugging the piBrick into any external computer or server turns its keyboard and trackpad into a fully functional USB input device, independent of the Pi. A sysadmin arriving at a server rack without a spare keyboard doesn’t need to find one; the piBrick already is one. That framing, as a tool for engineers and sysadmins rather than simply a hobbyist novelty, runs through the whole project.

A full Linux desktop runs on the CM5, alongside the system administration and networking tools that tend to be useful in those situations. NVMe SSD support in 2230 or 2242 formats adds storage headroom when the SD card isn’t enough. Stereo speakers, a microphone, and an optional camera module round out a spec sheet that covers more ground than the form factor suggests. The project files, schematics, and build instructions are all available as open source, which means the $172 cost is the floor, not a retail price, and the design itself belongs to anyone who wants to build on it.

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One Revolution Per Minute: How THE MIROR Makes Time Visible

Most lamps exist to solve a problem: you need light, so you buy a lamp. THE MIROR Collection, by design studio MIRORlab, starts from a completely different premise. Rather than asking how to illuminate a room, it asks what light could be if it were designed to make you feel the passage of time. The answer is a kinetic lighting system that is part optical instrument, part ambient installation, and one of the more quietly radical design concepts I’ve come across in recent memory.

At its heart, THE MIROR is built around a slowly rotating light source paired with a set of six interchangeable magnetic glass lenses. Each lens contains embedded micro-patterns and textures that refract and fragment light into shifting projections across walls, ceilings, and floors. Nothing in the room physically changes. Yet from one minute to the next, the space looks and feels entirely different. The effect is genuinely mesmerizing, the kind of thing you notice out of the corner of your eye and then can’t stop watching.

Designer: MIRORlab

The detail worth dwelling on is the rotation speed: exactly one revolution per minute. That’s not an arbitrary number. It’s calibrated to align with a natural perceptual rhythm, slow enough to feel meditative rather than dizzying, but active enough that you remain aware of it at all times. The light is always doing something. It’s the design equivalent of a really good ambient soundtrack, present without being intrusive, affecting the room without demanding your full attention.

What MIRORlab is essentially arguing is that most lighting design treats time as irrelevant. You flip a switch, the room is lit, and that’s the end of the relationship. THE MIROR reframes light as a time-based medium, something that unfolds, rotates, and transforms continuously. No two projected moments are ever identical, even with the same lens. In that sense, it has less in common with conventional lighting and more in common with kinetic sculpture or generative art. The lamp isn’t just a tool for visibility. It’s a system for experiencing duration.

The six lenses, named Earth, Nebula, Dune, Bloom, Warmwhite, and Metropolis, were each developed through research into atmospheric perception and environmental light conditions. The reference points are genuinely cinematic: sunset diffusion across open landscapes, deep-space nebula imagery, solar eclipse transitions, water reflections under shifting cloud cover, and city lights seen from altitude at night. Most product designers think in finishes and colorways. MIRORlab thought in atmospheres. Swapping a lens doesn’t just adjust the quality of the light; it changes the entire emotional register of the room, and that’s a remarkable thing to get out of a piece of magnetized glass.

I think the broader cultural moment makes THE MIROR feel especially timely. We spend more time than ever in rooms that don’t change, and the relationship between a person and their living space has become both more intimate and more psychologically loaded. Design has started responding to that shift with a growing category of objects that prioritize atmosphere over function: white noise machines, scent diffusers, smart lighting systems, biophilic elements. All of them are answers to the same underlying question about how space should make us feel. THE MIROR fits cleanly into that conversation, but with a level of optical and conceptual depth that most of its peers simply don’t reach. It doesn’t just set a mood. It gives the room a sense of time passing, which is a genuinely different thing.

The more I sit with THE MIROR Collection, the less it feels like a lighting product and the more it feels like a quiet philosophical statement. It suggests that a room should move with you rather than simply surround you, that ambient experience doesn’t have to be passive, and that something as unassuming as a lamp can carry a real point of view about how we inhabit space. That’s a significant ask of a rotating glass lens. But if the projections look anything like the concept promises, it’s a completely fair one.

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DIYer turns tiny GameCube keychain into a fully-functional controller

Controllers come in all shapes and sizes, depending on the gamers’ needs, and most importantly, their holding comfort. Things get really interesting as a lot of big tech companies invest a lot of effort in designing a one-size-fits-all controller, which holds good for long gaming sessions. While most controllers are more or less the same size, there’s always that element of curiosity for accessories that are radically different from the standard proportions.

YouTuber Crux, who’s known for interesting creations with an infusion of gaming, has crafted a mini controller out of pure curiosity. Having got the Backpack Buddies GameCube controller keychain, he asked himself the question – can this be turned into a functional controller? That led to this interesting DIY project that is as intricate as things can get, since the maker is dealing with the super small size of things.

Designer: Crux

We all have keyrings in some form or another, and these cute little accessories evoke the feeling – what if these were functional? The DIYer addresses this curiosity with the functional GameCube controller keychain that looks extremely satisfying as it takes shape. Since he was dealing with very small proportions here, the rotary motor tool does the trick of shaving off the extra bit on the inside of the keychain controller to make space for all the electronics. To put together the intricate joysticks, D-Pad, and other buttons, the DIYer goes down the 3D printing lane. Of course, the button controls and the joysticks had to be mounted on a sturdy base on the inside; that’s why Crux goes for the surface-mount tactile switches.

The DIY progresses with splitting the two controller halves and making up the necessary space to fit the electronics. The ultra-thin enameled wires connect the different components to the Waveshare RP2040-Zero microcontroller board, which is programmed with firmware that makes the cute little keychain gamepad act like a native GameCube controller. The final step involved salvaging the wire and plug from the real controller and attaching it to the output ports. Once everything is in place, it’s time to connect the controller to the port and enjoy some gaming. He demonstrates a session of Fortnite and then moves to Mario Kart Wii. All the inputs work as intended, and you just wish this thing were available to grab right away.

If you manage to check out the complete video till the end, Brux hints at more keychain projects in the future. These include the SNES controller, N64 controller, and 3DS controller, which are absolutely cool. Somehow, if he can manage a wireless keychain controller DIY, that would be sublime.

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