{"by":"pentakkusu","descendants":39,"id":49978595,"kids":[49981221,49983637,49985187,49990064,49982816,49987167,49983584,49984770,49983737],"score":87,"text":"I am a film photographer and do some darkroom printing and always wanted one of the proper, advanced f-stop timers, but never really wanted to spend a couple hundred dollars on one. Eventually I figured my phone was already perfectly capable of doing the timing, it just needed a way to switch the enlarger.<p>So I built Darkplug around a cheap smart plug. The app controls the enlarger over the local network and does regular timing, f-stop timing, test strips, has an intuitive dodge&#x2F;burn workflow, split grade (2 timing channels) and paper development timing.<p>I’ve been using it for a few months in my improvised bathroom darkroom.<p>Fair warning: the app was blindly vibe coded using Codex and Xcode.","time":1791295087,"title":"Show HN: I turned my iPhone and a $20 smart plug into an f-stop timer","type":"story","url":"https://peterszentkiralyi.eu/darkplug/"}