Locating the source of a mysterious beep with Claude

Claude Code was used to build Beep Locator, a software system that triangulates the source of a mysterious beep using multiple devices—two iPads, a phone, a MacBook Pro and a Surface Ultra—running a Python web server that lets users connect listeners via QR code or URL. The system, which includes a "Rough mode" for manually placing device icons and a clapping mode for testing, located the beep to within about 40cm, leading to the discovery of an old carbon monoxide detector in need of new batteries. It matters as a demonstration of how AI-assisted coding can turn a household annoyance into a working localization system built from commodity hardware. What to watch next is whether such acoustic triangulation approaches get adopted more broadly for low-cost indoor positioning.