This project turns an M5Stack PaperMono (ESP32‑S3 with a 3.97" 480×800 e‑paper touchscreen) into a fridge‑mounted shopping list and provides the complete firmware and companion server/web UI. The firmware is compact (~2,400 lines of C++), implements a usable touch UI with an on‑screen keyboard and suggestions from a local catalog, and handles e‑paper specifics: fast partial updates for taps, scrolling and typing, a full refresh every 10 partials to reduce ghosting, and 1‑bit dot‑pattern greys. Power and networking are optimized for low consumption: Wi‑Fi is enabled only for sync (hourly, after edits, or on demand), edits are queued to flash for offline use, there's power‑button shutdown with a deep‑sleep fallback, and safe battery cut‑off. Lists are shown grouped by aisle in walking order; items can be ticked on the device while everyone else edits via a phone web app.
Architecture bundles a PlatformIO firmware, a FastAPI+SQLite server, and a phone web UI; the server can optionally use Claude to auto‑sort new items into aisles. Quick start covers running the Python server and flashing firmware (with a warning to back up device flash). Status is explicit: a personal project, tested on one device (PaperMono C153), no on‑device Wi‑Fi setup and no server authentication (recommend LAN or reverse proxy), and code is GPL‑3.0. Author: Seamus Cawley.
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Framework has opened pre-orders for its 192GB Desktop DIY Edition featuring AMD Ryzen AI Max 400 Series, starting at $11,239. Customers can choose between DIY or pre-built options, with the ability to order multiple units and customize configurations. (frame.work)
Groundrun automates Wi-Fi setup testing on the ESP32, ensuring reliable connection methods like Bluetooth, Soft AP, and WPS are consistently functional. A simple custom app sends credentials via different protocols to test each setup process. (groundrun.io)
China's 2.2MW EV chargers are already in service across five cities, enabling charging in under five minutes. The US is considering 750kW chargers, expected to arrive next year after delays from 2026. (electrek.co)
The CHOMPI portable sampler instrument has been released as open-source, with hardware and software files available on GitHub for developers to customize. The project is discontinued and no further updates will be provided, but the community can discuss and share creations on the CHASE BLISS Discord. (chompiclub.com)
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