Darkplug - iPhone darkroom timer for enlarger control

Show HN: I turned my iPhone and a $20 smart plug into an f-stop timer

Darkplug turns your iPhone and a $20 smart plug into a precise darkroom timer for film photographers. It controls your enlarger via a compatible Shelly smart plug on your local network, offering classic timing plus advanced workflows like F-stop steps, guided test strips, and complex dodge and burn planning. The red-on-black interface is safe for photo paper, and Darkplug+ unlocks pro features with a one-time purchase. No subscriptions, just a smarter darkroom.