GoKawiil
Tech News
A developer released PaperMono Shopping List, an open-source C++ firmware (about 2,400 lines) for the M5Stack PaperMono, an ESP32-S3 device with a 3.97-inch e-paper touchscreen. The firmware turns the device into a fridge-mounted shopping list with touch input, an on-screen keyboard, and a companion mobile web page that keeps the list synced.
A hobbyist repurposed an idle LILYGO T5 4.7-inch e-paper module, built around an ESP32 chip, to create a static home dashboard using Claude Code. The device displays local temperature and humidity readings, curated tech news pulled from sources like Hacker News, and astronomical event data such as occultations and eclipses relevant to telescope observation.
Boox showed additional details of its Picco e-reader at IFA, a compact rival to the Xteink X4 with a 3.97-inch touchscreen e-paper display and physical page-turn buttons that support customizable short and long presses. The device skips onboard storage in favor of microSD cards, but adds USB-C and WiFi transfer options absent from Xteink's hardware, and runs a stripped-down Linux OS rather than Android, bundling apps like a timer, todo list, and reading tracker.