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Predictive Sensing: Catch Failures Before They Happenadvanced · ~300 min

The Short-Cycle Detector — Catch a Failing AC Compressor Weeks Before It Quits

Why does an air conditioner usually die on the hottest day of the year, with no warning at all — when the electrical signature of the failure has been visible in its on-off rhythm for weeks?

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The Short-Cycle Detector — Catch a Failing AC Compressor Weeks Before It Quits
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What you'll do

A short-cycle detector that Claude Code built — a non-invasive current clamp (fitted by a licensed pro) and an outdoor temperature probe feeding an ESP32, with a Python analyzer that turns raw amperage into a per-cycle ledger, learns your unit's own healthy run-and-rest rhythm at each outdoor temperature, and pushes an early warning when the runs shorten while the rests stay pinned at the thermostat's lockout floor — the specific pattern that separates a failing compressor circuit from a merely comfortable evening.