DarkPlug

A developer has built DarkPlug, a tool that turns an iPhone and a cheap smart plug into an f-stop timer for photographic darkroom enlargers. The setup replaces dedicated darkroom timers with hardware most people already own, using the smart plug to switch the enlarger lamp for precise exposure increments. The project is drawing attention on Hacker News, where readers are discussing the practicality of the DIY approach for film photographers.