Hacking with Claude on a $27 Smart Watch

Mike Kasberg used Claude and other AI models to develop a custom watch face for a $27 PineTime smart watch, leveraging the device's open-source firmware, good documentation, and built-in simulator for rapid iteration. The AI successfully created a rough approximation of a Casio watch face design but required human feedback and refinement to achieve pixel-perfect positioning, demonstrating both the capabilities and current limitations of AI coding agents for embedded systems development.