ConnexionDIY 3D-Printed Clamshell Turns BOOX Palma Into a Tiny Laptop
Palmtops and UMPCs are experiencing a quiet resurgence among people who want something more focused than a laptop and more tactile than a phone. Compact e-ink devices and tiny Bluetooth keyboards have become affordable building blocks for exactly this kind of project, letting makers combine them into pocketable machines tailored to writing, reading, or just tinkering. The result is a small but growing wave of DIY cyberdecks and writerdecks that feel like modern reinterpretations of classic Psion palmtops.
The Palm(a)top Computer v0 is one of those projects, born on Reddit when user CommonKingfisher decided to pair a BOOX Palma e-ink Android phone with a compact Bluetooth keyboard and a custom 3D-printed clamshell case. The result looks like a cross between a vintage Psion and a modern writerdeck, small enough to slide into a jacket pocket but functional enough to handle real writing and reading sessions on the go.
Designer: CommonKingfisher
The core hardware is straightforward. The BOOX Palma sits in the top half of the shell, while a CACOE Bluetooth mini keyboard occupies the bottom half. The keyboard was originally glued into a PU-leather folio, which the maker carefully peeled off using gentle heat from a hair dryer to expose the bare board. When opened, the two halves form a tiny laptop layout with the e-ink screen above and the keyboard below.
The clamshell itself is 3D-printed in a speckled filament that looks like stone, with two brass hinges along the spine giving it a slightly retro, handcrafted feel. Closed, it resembles a small hardback book with the Palma’s camera cutout visible on the back. Open, the recessed trays hold both the screen and keyboard flush, turning the whole thing into a surprisingly polished handheld computer, considering it’s a first prototype.
The typing experience is functional but not perfect. The maker describes it as “okay to type on once you get used to it,” and thumb typing “kinda works,” though it’s not ideal for either style. You can rest the device on your lap during a train ride and use it vertically like a book, with the Palma displaying an e-book and the keyboard ready for quick notes or annotations.
The build has a few issues that the maker plans to fix in the next version. It’s top-heavy, so it needs to lie flat or gain a kickstand or counterweight under the keyboard, possibly a DIY flat power bank. The hinge currently lacks friction and needs a hard stop around one hundred twenty degrees to keep the screen upright. There are also small cosmetic tweaks, like correcting the display frame width.
Palm(a)top Computer v0 shows how off-the-shelf parts and a 3D printer can turn a niche e-ink phone into a bespoke palmtop tailored to one person’s workflow. Most consumer gadgets arrive as sealed rectangles you can’t modify, but projects like this embrace iteration and imperfection. It’s less about having all the answers and more about building something personal that might inspire the next version.
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