A £40 e-reader runs on an ESP32 and outprints the Kindle (blog.omgmog.net)
The Xteink X4 arrives with a 16GB microSD card, a MagSafe ring, and stock firmware locked to three fonts and a Chinese default menu. The reviewer flashed it anyway and got TeX-quality justification out of a microcontroller.
Then the thread turned into a confessional: owners who can't stop buying more, a custom-firmware author testing a build, and one screen that shattered in a backpack.
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