A darkroom timer for developing film

What Timer does

• Runs developer, stop, fix and wash from a saved recipe: film, EI, developer, dilution, temperature, time and agitation
• Agitation cues with a countdown and sounds; Ilford's standard pattern when the recipe has none
• Black-and-white times adjusted for temperature, about 8 % per °C within ±6 °C; colour processes are never adjusted
• Push and pull in thirds of a stop, up to ±3 stops
• Mixing amounts for your tank from dilutions like 1+9, 1:9 or stock
• Chemistry batches with capacity and shelf life; reused developer adds time per roll
• Keeps running while you use other tools and marks the roll developed when done
• Notes go back into the recipe for the next roll