This describes building a compact e‑paper dashboard around a LILYGO T5 4.7" module (ESP32 dual‑core 240 MHz, 8 MB PSRAM, 16 MB flash, 960×540 16‑level grayscale, USB‑C, Li‑Po, RTC) to surface indoor temperature/humidity baselines, weather, to‑do/reading, markets, air quality, Hacker News and astronomical cues. Motivations were practical: gather a baseline of indoor temp/humidity with a DHT22 and Grafana, reduce algorithmic social feed noise by prioritizing Hacker News via miniflux, and track air quality and lunar events for telescope observing. The project reuses an idle e‑paper panel and stitches multiple personal data needs into a single, glanceable display.
Implementation uses an HTTP JSON feed aggregated by a Clojure server and rendered on the ESP32, with layout and UI guidance generated by an LLM (Claude). After an ugly single‑blob first try, a 2×3 grid was refined - merging cells to give Hacker News more room, consolidating ToDo/Reading, switching fonts (OpenSans → Montserrat), and drawing with primitives. Early networking worked over Wi‑Fi, but mDNS resolution failed and firmware issues remain: the ESP32 sometimes won’t wake from sleep and server fetch failures can eliminate the last good value. Planned improvements include indoor AQ sensor integration, syncing of to‑do/reading lists, and change detection to skip unnecessary e‑paper refreshes.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
Samsung plans to more than double its HBM4 and HBM4E DRAM output next year, reaching 250,000 wafers per month. The company will also increase outsourced glass carrier volume to support high-layer stacking production. (en.sedaily.com)
papyDeck is a small, open-source console that runs Lua scripts as games, with source code accessible and modifiable by users. It features high-resolution graphics, multiple cores, and can display games over HDMI, emphasizing transparency and user creativity. (papydeck.eu)
Carlos Asmat built a custom home server using a Zotac MAGNUS EN1070K with added drives and upgrades to host backups and download Linux ISOs. He repurposed old hardware and printed custom parts to create a cost-effective NAS solution. (asmat.ca)
Sherline Tools, a US-based manufacturer of precision lathes and CNC machines, is winding down its manufacturing operations due to rising costs and changing consumer habits. The company will continue to sell existing products and parts until the end of October 2026, while maintaining warranty support. (toolguyd.com)
Porsche has introduced wireless inductive charging for its Cayenne Electric SUV, allowing drivers to charge by parking over a charging pad. The system offers up to 11 kW charging with safety features and is available in Europe now. (electrek.co)
Nvidia GPUs contain 10 to 30 RISC-V cores used for management tasks, not user programming. One core has been handling significant parts of the graphics driver since 2018, operating cryptographically securely. (xda-developers.com)
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