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Making an ESP8266 survive in the wild The sketch worked. That was the problem. I had a perfectly reasonable little temperature monitor: an ESP8266, a 10k NTC thermistor on A0, an optional OLED, and code that read the sensor, posted the result to a PHP…

Router: OpenWrt (homerouter) Date: April 2026 The goal was to resolve local hostnames in the format {hostname}.h1.ehmi.se across the network (e.g. auron.h1.ehmi.se → 10.1.0.2). This was incorrectly referred to as “mDNS” but is actually local unicast DNS resolution using the existing DNS infrastructure. Client └──▶…

Executive Summary Production environments require a delicate balance between security and stability. While automated patching can introduce breaking changes, ignoring vulnerabilities creates risk exposure. This article presents a pragmatic approach to monitoring Docker container vulnerabilities that alerts you to new CVEs without automatically updating your…

A Deep Dive into Git Secret Exposure, Recovery, and Prevention A production environment’s .env file containing sensitive credentials was accidentally committed and pushed to a public GitHub repository. What seemed like a straightforward fix quickly escalated into a multi-layered incident affecting production services and requiring…

WebAssembly (Wasm) is a modern, powerful technology that’s very much alive and growing! It’s quite different from Java Applets and ClickOnce - think of it as a way to run near-native speed code directly in your web browser. WebAssembly is a binary instruction format that…