Smallest E-Reader Gets a Major Upgrade
Paul Lagier recently released a new version of his most tiny e-reader project, moving away from the rough prototype into a more robust and durable device. This second version is a response to the original build, which first launched just over a month ago as a minimalist tool for reclaiming time spent on mobile gaming. Its focus was on creating a simple, compact e-reader that fits conveniently into your pocket or bag.
Hardware and Design Changes
The first version used an ESP32 microcontroller (which costs around $16.79) and a small 2.9-inch monochrome e-ink display. However, it faced several assembly challenges; the 3D-printed case depended on tiny plastic pins that many hobbyists found hard to produce reliably. It also had inefficient memory use, with most of its 8 MB flash storage wasted, leaving so little as 1.5 MB for books, equaling maybe two books max. The new version eliminates these issues by switching to a sturdy screw-down case design, incorporating M2 threaded inserts, making the entire device, which is the size of an AirPods case, much stronger and more solid. An added small patch of self-adhesive foam inside helps to dampen the mechanical "click" noise from the navigation button, a common complaint among early users. The design now feels more reliable and user-friendly than its predecessor.
Software Improvements and Features
On the software part, the second iteration brings a significant partitioning fix that frees up 5.5 MB of storage for books. Automated text compression has also been introduced, allowing the device to now accommodate between six and ten full-length books at once. Users can manage their library more easily thanks to folder-based systems, a storage indicator visible on the web interface, and the capability to jump directly to specific pages—features that the single-button UI couldn't support in the original version. These upgrades make reading and navigation much more efficient, enhancing overall user experience.
Open-Source and Parts Cost
- The project remains open-source, with available case designs and firmware versions listed for €4.90.
- Parts for the build typically cost around $30, making it an affordable DIY project for technology enthusiasts. The affordable parts combined with the open-source nature makes this device a fun and functional alternative to just reading on a smartphone, providing a dedicated space for digital reading in a small, portable form factor.
Overall, Paul Lagier's e-reader project continues to impress by balancing minimalism, functionality, and affordability, now with a much more refined design that is both practical and fun to build.
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