Live demo. This app is designed to be used on a mobile phone and I recommend you open the link using one. While it does work perfectly fine on a larger screen it looks a bit odd.
A timer app designed for pour-over coffee.
Making pour-over coffee is a finicky process. The result of a brew is highly dependent on each variable and anything we can do to control those variables is helpful. Two such variables are time and brew weight. Ensuring that the right amount of water is added at the right time is paramount. The traditional process is to keep your eye on a stopwatch and the scale and do the math in your head for what the weight should read at what time.
To make this process easier, Carafe does the calculations for you and all you need to do is watch the weight on screen, and keep the weight on the scale in sync. This makes the process easier and more consistent.
There are many different techinques for pour over coffee out there, with different steps, different ratios of coffee:water, and different timing between each step. To capture all this variety, I've designed a format for describing arbitrary pour-over coffee recipes and an engine that can "run" these recipes interactively. Seerecipes for an example of a recipe.
Recipes consist of a series of ordered steps. Each step can have one of several types. Every recipe starts with step of type :step.type/start and ends with a step of type :step.type/end. There are two additional step types that make the bulk of the recipe: :step.type/prompt which waits for user input before continuing. And :step.type/fixed which times for a particular amount of time before automatically continuing. With just these 4 step types, you can describe many pour-over recipes.
Additionally, steps can start and stop the global timer by defining the :step/timer attribute with the value :start or :stop.
:step/typethe step type as explained above:step/titletext to display at the top of the page while this step is active:step/descriptiontext to display in the body explaining what to do during this step:step/notesecondary help text (optional):step/timereither:startor:stop. Starts/tops the timer at the start of this step.:step/displaycontols what value to display in the main timer window. Either:step.display/timeor:step.display/weight:step/volumethe total expected brew weight at the end of this step's duration
Fixed steps can also contain the following properties:
:step/durationthe number of seconds for this step to be active before advancing
There are no special attributes for this step type.