The forecast is clear: clouds on e-paper, powered by the cloud

This article describes a DIY e-paper project that uses a Waveshare 7.5-inch display and an ESP32 to periodically fetch and show a pre-rendered weather panel, implemented via a three-layer pipeline: an ESP32 client that downloads bitmaps, a Cloudflare Workers Browser Rendering API worker (Puppeteer) that renders HTML/CSS to PNG and applies Floyd–Steinberg dithering to monochrome, and a separate worker that serves weather content from an external API. It covers hardware setup, Arduino-based fetching and display, the rendering/dithering logic, and deployment with Wrangler and KV, demonstrating an end-to-end system for adapting web content to low-power e-paper displays.