Firmware for the Xteink X4 e-paper display reader (unaffiliated with Xteink).
Built using PlatformIO and targeting the ESP32-C3 microcontroller.

CrossPoint Reader is a purpose-built firmware designed to be a drop-in, fully open-source replacement for the official
Xteink firmware. It aims to match or improve upon the standard EPUB reading experience.

E-paper devices are fantastic for reading, but most commercially available readers are closed systems with limited customisation. The Xteink X4 is an affordable, e-paper device, however the official firmware remains closed.

CrossPoint exists partly as a fun side-project and partly to open up the ecosystem and truely unlock the device's
potential.

CrossPoint Reader aims to:

• Provide a fully open-source alternative to the official firmware.
• Offer a document reader capable of handling EPUB content on constrained hardware.
• Support customisable font, layout, and display options.
• Run purely on the Xteink X4 hardware.

This project is not affiliated with Xteink; it's built as a community project.

Pictures from Reddit members and GitHub repo.