Meet the reTerminal Sticky: The Hackable E-Ink Display That Wants to Run Your Home and Read Your Books
E-ink is no longer just for reading the latest bestseller. The technology has steadily infiltrated our daily lives, popping up in everything from smart home dashboards to digital typewriters. Now, Seeed Studio is pushing the boundaries of what a compact e-paper device can be with the reTerminal Sticky, an ultra-low-power, magnetic display designed to serve as the ultimate digital notice board for your family—and a highly hackable playground for makers.
A Smart Hub Powered by the ESP32-S3
At its core, the reTerminal Sticky is powered by the ESP32-S3 microcontroller, making it an open-source dream for tinkerers who want to build custom smart interfaces. Out of the box, however, it is positioned as a versatile family hub. The concept is simple but highly effective: stick the device to your wall, door, or refrigerator using the included magnetic ring, and use it to display voice-transcribed notes, real-time weather updates, to-do lists, or a digital clock.
Physically, the reTerminal Sticky stands out in a crowded market of increasingly razor-thin e-readers. Compared to streamlined devices like the minimalist XTEINK X4, the Sticky is substantially thicker and noticeably heavier. It feels purposeful in the hand, though its primary destiny is to be mounted on a surface. It features a glossy touch screen—a departure from the matte finishes usually preferred by reading purists—and notably lacks a frontlight.
Despite these unconventional choices, Seeed Studio made an excellent design decision: matching the white bezels perfectly with the background color of the e-ink display. This creates a seamless, borderless illusion where text appears to float without any physical hardware margins boxing it in.
Voice Input, Audio, and App Integration
Unlike most traditional e-readers, the reTerminal Sticky is equipped with both built-in microphones and onboard speakers. This hardware supports its AI-powered voice input capabilities. Through the companion app—which connects to both iOS and Android via Bluetooth and Wi-Fi—users can dictate notes that are instantly transcribed and pushed to the display.
Currently, the voice transcription supports English and Chinese, meaning users looking for other languages will need to rely on the app's manual text input for the time being. The interface also beautifully supports landscape mode, making it an excellent standalone weather station, widget dashboard, or indoor temperature monitor.
The Ultimate E-Reader Alternative?
What truly makes the reTerminal Sticky fascinating is its open-source ethos. Through the community-driven "reTerminal Sticky Playground," users are encouraged to flash custom software and completely repurpose the hardware. For smart home enthusiasts, it can run ESP Home, transforming it into a low-power control node for your local network. For developers wanting a bit of fun, there is even a "Sticky Arcade" firmware.
Perhaps most exciting for the e-ink reading community is the device's compatibility with alternative reading firmware. The Sticky fully supports both Crosspoint Reader and CrossInk. By flashing these, you can effectively bypass the smart-home family hub interface and transform the Sticky into a pocket-sized, touch-enabled e-reader. This positions it as a highly capable alternative to devices like the XTEINK X3, X4, or X4 Pro.
While the lack of a frontlight and the glossy screen mean it might not replace a dedicated bedtime reader, the added utility of physical buttons (which double as page-turners or volume rockers), USB-C charging, and an SD card slot make it a surprisingly robust reading companion for the tinkering crowd.
The Verdict
The reTerminal Sticky elegantly bridges the gap between a consumer-friendly smart display and a hacker’s blank canvas. Whether you want a low-power dashboard to leave reminders for your family, or a customizable ESP32-S3 device to flash with CrossInk for your afternoon reading, Seeed Studio’s latest offering is a delightfully unique addition to the expanding e-ink ecosystem.
Go check it out here and buy it, it’s cheaper than XTEINK:
https://www.seeedstudio.com/reTerminal-Sticky-p-6861.html?utm_source=KOL&utm_medium=StefanSvartling
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