The author of the article was plagued by a mysterious intermittent beep in their box room, but didn't want to dig through numerous unpacked boxes to find the source. To solve the problem, they created a software system called Beep Locator, which uses multiple devices scattered around the room to triangulate the source of the noise. The system, built with Claude Code, involves running a Python web server and connecting devices via QR code or URL, which then play noises to estimate their locations and listen for the beep, allowing the user to pinpoint its origin, with a "Rough mode" available to manually adjust device locations for more accurate results.