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Life & fun · October 6, 2026

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

A darkroom timer for iPhone and iPad.

I turned my iPhone and a $20 smart plug into an f-stop timer launched on October 6, 2026 with 86 votes, #193 of 3,178 launches that month and more than 95% of that year's launches.

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In plain words

Darkplug is a darkroom timer app for iPhone and iPad that controls enlargers via compatible smart plugs over a local network. Designed specifically for film photographers and darkroom printers, it offers precise exposure timing, guided workflows, and a red-on-black interface optimized for darkroom conditions. The app supports various printing techniques including straight prints, exposure testing, dodge and burn sequences, and split grade printing.

written from the facts on this page · October 2026

From the sources

Control your enlarger with Darkplug and a compatible smart plug on your local network. Built for film photographers and darkroom printers, Darkplug combines precise timing, guided workflows, and a red-on-black interface designed for darkroom use. ☝️ You only need this beside your enlarger and you are set (EU model pictured). Darkplug times exposures like a classic darkroom timer, and also provides more advanced printing workflows with a very unique feature set. Whether you are making a straight print, testing exposure, planning a complex dodge and burn sequence, or doing split grade printing, Darkplug keeps the process fast and straightforward. Darkplug uses a red-on-black interface…from peterszentkiralyi.eu

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