https://headlessdiaries.com/Recent content on Headless DiariesHugoen-gbSun, 11 Oct 2026 08:30:00 +0000https://headlessdiaries.com/posts/pi-watchdog-earlyoom/Sun, 11 Oct 2026 08:30:00 +0000https://headlessdiaries.com/posts/pi-watchdog-earlyoom/A Raspberry Pi 4 that needed a power cycle every few weeks now recovers from hangs on its own, using the built-in hardware watchdog and earlyoom. Here is the setup I used.https://headlessdiaries.com/about/Sun, 11 Oct 2026 08:00:00 +0000https://headlessdiaries.com/about/<h2 id="whats-this">What&rsquo;s this?</h2> <p>Field notes from a home lab. I run a small collection of machines — a Raspberry Pi, a mini PC, a few Android devices — and I write up the things I build, break, and fix. Self-hosting, home networking, automation, and the occasional Android project.</p> <h2 id="why-anonymous">Why anonymous?</h2> <p>No face, no name, no personal brand. The work should stand on its own: if a guide is correct and useful, it doesn&rsquo;t matter who wrote it. Anonymity also keeps the focus where it belongs — on the machines, not the person.</p>https://headlessdiaries.com/posts/tailscale-subnet-router/Sat, 10 Oct 2026 10:30:00 +0000https://headlessdiaries.com/posts/tailscale-subnet-router/Tailscale subnet routing lets you reach every device on your home LAN — printers, dashboards, a NAS — from anywhere, through one always-on machine. It took me five minutes to set up.https://headlessdiaries.com/posts/android-ota-self-updater/Fri, 09 Oct 2026 10:30:00 +0000https://headlessdiaries.com/posts/android-ota-self-updater/Apps installed outside the Play Store have no update mechanism. This is the self-updater I built into a sideloaded Android app: version polling, HTTPS download, SHA-256 verification, PackageInstaller.