Build log
What I build, why I made each decision and what went wrong. Some posts are in Spanish.
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Latest post
A Siri Shortcut, a Raspberry Pi, n8n and an agent: how I ask my homelab questions from my wrist for 0.2 cents, why the voice path is read-only, and what an independent security review found before I open-sourced it.
How I made my self-monitoring homelab answerable: a read-only MCP server, a LangGraph diagnosis agent that cannot execute anything, models routed by evaluation, and the numbers (and cost mistakes) behind it.
How a Raspberry Pi and a desktop became a self-monitoring homelab: VPN-only access, a daily doctor script, 3-2-1 backups with a tested restore, and controlled updates, plus the incidents that taught me the most.
How a Telegram group, Grocy, Tandoor and a generated n8n workflow became a self-hosted kitchen assistant: receipts to stock, weekly menus to shopping lists.
How QRFleet connects its Next.js interface, FastAPI backend, offline queue and managed storage to handle fleet inspections.
I use Hermes Agent as a terminal assistant. For cloud requests, I recently switched its default model to openrouter/pareto-code. The name looks like a model ID, but it is a rout…
The Projects page on this site used to describe an image pipeline built around Bannerbear. That description was out of date. I wanted to change a layout without going back to a…
Àlex Guardiola