The editorial argues the quiet release (no press push, no blog post) reveals intent: Valve is treating open hardware as standard practice, not PR. By publishing the full KiCad schematics, BOM, STEP files, firmware, and HID protocol before the Steam Machine even ships, Valve is deliberately front-loading the accessory ecosystem the way it did with the Deck's CAD files and the Index controllers' mechanical drawings.
Cites concrete precedent: Steam Deck CAD files spawned JSAUX shells, docks, and cooling mods within a year, and Index controller drawings enabled finger-tracking prosthetics and industrial VR rigs. The argument is that Valve sold more units because accessory makers didn't have to reverse-engineer USB descriptors, and this e-ink release follows the same pattern.
The submitter surfaces GamingOnLinux's reporting that the reference design uses a common Waveshare-style e-ink panel, RP2040-class MCU, and USB-C connector, with the device enumerating as a standard HID with a documented framebuffer protocol. No signed blobs, no fuses, no Steam client dependency — meaning a hobbyist can literally solder one together this weekend.
Valve dropped the full hardware package for the small e-ink display that sits on the front of the upcoming Steam Machine. Not a datasheet. Not a marketing render. The actual thing: KiCad schematics, board layout, bill of materials, STEP files for the enclosure, firmware source, and the USB HID protocol spec. It's on GitHub under a permissive license, and the reference build uses off-the-shelf parts — a common Waveshare-style e-ink panel, an RP2040-class MCU, and a USB-C connector.
If you want to solder one together this weekend, nothing is stopping you. The panel shows game art, download progress, notifications, and a clock when the machine is asleep. On the reference firmware it enumerates as a standard HID device and takes framebuffer updates over a documented protocol — no Steam client required, no signed blobs, no fuses. GamingOnLinux notes the repo went up quietly, no press push, no blog post. That's the tell: this isn't a marketing move, it's engineering hygiene.
The Steam Machine itself doesn't ship until later this year. Valve is releasing the accessory design before the console it accessorizes exists. That ordering matters.
Valve has done this twice before and it worked both times. When the Steam Deck launched, Valve published CAD files for the shell within weeks — and within a year there was a cottage industry of aftermarket shells, docks, cooling mods, and JSAUX everything. Valve sold more Decks because the accessory ecosystem existed. The accessory makers made money because Valve gave them a head start. Nobody had to reverse-engineer a USB descriptor at 2am.
The Index controllers got the same treatment — full mechanical drawings, mount specs, tracking puck geometry. That's how you got the finger-tracking prosthetic hands, the industrial VR training rigs, and every weird trackpad mod on Hackaday. Valve's product management appears to have internalized something most hardware companies haven't: the accessory market is R&D you don't have to pay for, but only if you make the interface boring enough that hobbyists don't need permission.
Compare this to how Sony and Microsoft ship consoles. The DualSense has a haptic driver nobody outside Sony fully understands. Xbox controllers use a proprietary wireless protocol that took the community years to reverse. Nintendo's Joy-Con connector is a legal minefield. Every one of those companies would rather sell you a first-party accessory than let you build one — and the result is a thin, expensive accessory shelf and a thriving grey market of Chinese knockoffs that Nintendo then sues into oblivion.
Valve's calculation is the opposite. They make money on Steam, not on plastic. Every hour someone spends 3D-printing a custom Steam Machine bezel with an embedded second e-ink panel is an hour that person is thinking about their Steam library instead of their PS5. The console is a loss-leader for the store, and the accessory ecosystem is a loss-leader for the console. It's turtles all the way down, and at the bottom is a 30% cut of every game sold.
The HN thread on this is telling. The top comment is someone already speccing out a version with a bigger panel for a media PC. The second is asking whether the protocol supports partial refresh (it does, per the firmware). The third is someone who already ordered the parts. This is the community reaction Valve is optimizing for: not applause, but immediate hands-on-parts prototyping.
If you build hardware — even tangentially — there's a specific pattern worth stealing here. Valve didn't open-source the Steam Machine. They open-sourced one *peripheral*, with a documented HID protocol, that happens to also work as a standalone gadget. The panel is useful without the console. That's the trick.
Think about what this framing does for adoption. A Raspberry Pi enthusiast can use the panel as a status display for their homelab. A car-PC hobbyist can bolt it into a dashboard. A Home Assistant user can flash a fork that renders sensor data. None of those people are Steam Machine customers today. Some fraction of them will be tomorrow, because now they own hardware that plugs into one and *does more when it does*. The peripheral is a Trojan horse for the platform, and open-sourcing it is what makes the horse credible.
For engineering teams shipping consumer hardware, the operational lesson is: separate the accessory interface from the accessory product. If your device talks to peripherals over a standard bus (USB HID, I2C, BLE GATT) with a documented protocol, publishing that spec costs you almost nothing and buys you an ecosystem. If it talks over a bespoke encrypted channel with per-device keys, you've locked yourself into being the only accessory vendor forever — and history says you will not out-innovate the entire hobbyist internet.
There's a software analog too. The equivalent move in SaaS is publishing your webhook spec, your event schema, and a reference integration before your API is even GA. The companies that do this — Stripe, Linear, Vercel — get third-party tools built for them for free. The companies that don't spend the first two years post-launch writing the integrations themselves and wondering why adoption is slow.
Expect an aftermarket panel — bigger, color, higher refresh — on Tindie within six months, and a Home Assistant integration within three. Expect at least one YouTuber to build a Steam Machine into a 1990s-era Mac Classic shell using this panel as the CRT stand-in. And expect Sony and Microsoft to continue not doing this, because their business models can't afford to. Valve's edge here isn't technical — the e-ink panel is trivial hardware. The edge is that Valve is the only console-adjacent company whose incentives point toward *more* open peripherals, not fewer. As long as that stays true, the accessory shelf at any Steam hardware launch is going to look like nobody else's.
In case you're wondering and don't want to click around, the display is a standard Adafruit 5.83'' eInk panel: https://www.adafruit.com/product/6397
I'd love to see an easy guide to doing this with the Framework Desktop form factor. I didn't buy any of the silly little squares for the front of mine since I figured I could 3D print some later, but six months in still haven't gotten around to it.
the part selection is appropriate for the current steam machine pricing, but i wonder if having this resource can help someone salvage eink displays from old kindles to achieve the same result.
This is so cool! Coincidentally, I'm currently building something in a similar vein that pushes system metrics out to an Android app so an old phone or tablet can be used as a case screen. The app has widget plugins that expose a repo of metrics received and a GL surface, that can then be used
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I wish more hardware companies treated these kinds of optional add-ons as something the community can run with instead of either productizing them badly or locking them away completely...