Controls

Recipe Menu

• Up/Down: Browse recipes
• OK: Select recipe
• Back: Exit app

Recipe Info

• OK: Start brewing
• Back: Return to menu

Brewing

• OK: Pause/Resume timer (timed steps) or Advance (manual/completed steps)
• Right: Skip to next step
• Left: Go back one step
• Back: Abort brew, return to menu

Brew Complete

• OK: Return to menu
• Back: Exit app

Features

• Step-by-step guided brewing with clear instructions
• Automatic countdown timers with progress bars
• Manual advance for prep steps (no arbitrary timing)
• Vibration alerts when steps complete
• Total brew time tracking
• Pause/resume support
• Step navigation (skip ahead or go back)

Project Structure

coffee_timer/
├── application.fam      # App manifest
├── coffee_timer.h       # Types, structs, recipe definitions
├── coffee_timer.c       # Main app logic, UI, input handling
├── recipes.c            # Recipe data
├── coffee_timer.png     # 10x10 FAP icon
├── images/              # In-app image assets
│   └── CoffeeCup_20x20.png
└── README.md

Adding Recipes

Edit recipes.c to add new recipes. Each recipe has a name, description, parameters (coffee, water, temp, grind), and an array of steps. Steps can be:

• StepTypeAdd - Add coffee or water
• StepTypeStir - Stir
• StepTypeWait - Wait/steep
• StepTypePress - Press plunger
• StepTypeFlip - Flip inverted AeroPress
• StepTypePreheat - Setup/preheat

Steps with duration_sec = 0 are manual advance (press OK). Steps with a duration auto-start a countdown timer.

License

MIT