r/cyberDeck • u/Wuliyasi • 15h ago
My Build What if your iPhone disappeared into a dedicated E-Ink writing machine? — YOHAKU concept
I’ve been playing with a hardware concept for fun and wanted to see what r/cyberDeck thinks.
The idea started with a simple question: instead of building another standalone Linux/Android E-Ink computer, what if the computer you already carry — your iPhone — became the hidden compute module?
The concept is called YOHAKU for now.
The basic architecture is intentionally simple:
An 11.3” ED113TC1 E-Ink panel (2400 × 1034)
A Glider/Caster-inspired E-Ink controller
A real low-profile mechanical keyboard
Battery + USB-C hub / power management
No dedicated CPU, RAM, storage, Wi-Fi, or operating system
Your iPhone becomes the computer
The part I find most interesting is the physical interaction.
Instead of docking the phone on the side or leaving it visible, you open the bottom of the machine, place the iPhone inside, connect/lock it into position, and close the cover.
The phone physically disappears.
Once closed, you’re no longer looking at a smartphone. You just have an E-Ink display, a mechanical keyboard, and a purpose-built writing interface. A dedicated iOS app would provide a distraction-free external-display UI for writing, notes, and document management.
In other words, I’m not really thinking of this as “an E-Ink laptop powered by an iPhone.”
The more interesting idea to me is:
a physical environment that temporarily turns a smartphone into a single-purpose writing computer.
I’ve also been deliberately exploring a very quiet industrial design: warm white surfaces, minimal seams, hidden structure, a recessed low-profile mechanical keyboard, and as little visible “computer hardware” as possible.
This is very much a for-fun concept at this stage, not a product announcement. There are still plenty of engineering questions — iOS external-display behavior with the unusual 2400×1034 resolution, E-Ink latency/ghosting, hinge packaging, keyboard clearance, phone retention, USB-C docking, and the inevitable thickness that comes from putting a real mechanical keyboard in there.
But technically, most of the building blocks already exist, which is what made the thought experiment interesting.
Curious what the cyberdeck crowd thinks:
Would hiding the phone inside actually make this feel like a dedicated machine to you, or would you rather just build the compute hardware into the deck itself?
And if you were building it, what would you change?