Open-source lightweight E-Ink firmware for Xteink (X3/X4/Pro/Classic) and Picco. Features OPDS catalog, KOSync progress sync, deep sleep, and browser web flasher.
firmware esp32 platformio ebook-reader opds epub-reader e-ink koreader boox xteink kosync bookorbit picco
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Updated
Nov 11, 2026 - C++