EXPLORE — THE WHOLE YGG SYSTEM
Explore
A chronological stream of everything — guides, troubleshooting, notes, analyses, projects and curated external sources.
note The journal eats gigabytes before anyone notices The default journal cap is a tenth of the partition. On a small root that means gigabytes of logs nobody wants. project Infrastructure stabilization Stabilizing an organization’s technical backbone: administration rules, documentation, a platform for testing and hosting, and a link to the infrastructure one level up. project Investment assistant Local decision support for a personal investment portfolio: broker data, regular reports and an analytical framework with a traceable history of decisions. project mojeWebFoundry A framework for building several separate static sites on SvelteKit. It came out of moving away from Jekyll and doubles as a way to find out what current tooling can do. guide A dumb wireless doorbell in Home Assistant via RF433 and ESP32 How to capture the signal of an ordinary 433 MHz wireless doorbell and send each press to Home Assistant via an ESP32-C3. guide An IR-remote ceiling light via ESP32 and ESPHome How to capture an infrared remote’s codes and control a light from Home Assistant via an ESP32-C3 – without the physical remote. project AI as a tool Turning ideas into working solutions with AI – without a programming background, but with architecture, tests and quality checks as in team development. note SPF, Postfix and rspamd: common delivery problems The most common reasons an SPF check rejects mail that is perfectly fine – in the DNS record, in Postfix and in rspamd. explainer How DNS delegation works and why it matters DNS is a delegated tree: every zone can hand responsibility one level down. Understand that and you understand why changes propagate slowly and where to look for faults. project Multi-tenant platform A web application for multiple organizations on a shared core: separate data and settings for each client, a modular architecture and security from day one. link Czech Digital and Information Agency: activity reports What actually moved in the digitalization of the Czech state – read through the data rather than the press releases. reference nftables: rules for a home network A reference card for nftables: basic commands, tables and chains, and NAT masquerade for a home router.