Project context
About Metrion
Metrion is a personal, non-commercial notebook for measurements and small engineering experiments in a home laboratory.
The site exists because loose measurements are easy to lose and surprisingly hard to reconstruct. A note here usually starts with a practical question: how much current remains during deep sleep, whether a sensor offset is real, how a longer cable changes an I²C bus, or which graph actually helps diagnose a room-temperature change. The useful part is not the polished result; it is the conditions, wiring, assumptions, and failed variation that make the result interpretable later.
The hardware is ordinary: low-cost microcontrollers, environmental sensors, small DC supplies, fans, meters, and a few always-on home devices. The software is similarly plain. Data collection is kept local, pages are static, and the status view reads one JSON file from the same site. There are no accounts, forms, trackers, third-party embeds, or remote assets.