pebble-yes-watch

A Pebble SDK 3 watchface inspired by the YES Watch style (see https://yeswatch.com/): 24‑hour dial, day/night sector, moon phase disk, and a moon up/down ring (moonrise→moonset).

The project is designed to run well on both color and black/white Pebble models and to work in a hybrid mode:

• Primary: the phone companion (src/pkjs/index.js) computes and sends daily sun/moon rise/set plus moon phase.
• Fallback: if the phone is unavailable, the watch computes sunrise/sunset on-device (libm-free fixed‑point) and continues to render using cached data.

Features

• 24‑hour scale with even hour numerals and tick marks
• Day/Night display as a filled sector (day wedge over a night disk)
• Moon ring showing “moon up” interval
• Moon phase disk (with smoothing near full/new so it looks clean)
• Loading screen until valid location + astro data are available

Build

From the project root:

pebble clean
pebble build

The output bundle is:

• build/pebble-yes-watch.pbw

Note: a .pbw contains platform-specific binaries (aplite/basalt/chalk/diorite/emery/flint/gabbro). You ship one .pbw, but Pebble installs the correct binary for the target watch.

Run / Install in the emulator

Examples:

pebble install --emulator basalt
pebble logs --emulator basalt

To start an emulator, install the watchface, and save an app-start screenshot:

npm run screenshot -- basalt

The screenshot is saved to screenshots/<model>/app-start.png by default. Pass a different model (aplite, chalk, diorite, emery, flint, gabbro) or set STARTUP_DELAY_SECONDS=10 if the emulator needs more time before capture. The script seeds deterministic location/sun/moon data so the capture shows the watchface instead of the startup loading screen; set SEED_EMULATOR_DATA=0 to capture the loading state.

Configure in the emulator

pebble emu-app-config --emulator emery

You can target other emulators (aplite, diorite, flint, chalk, emery, gabbro) the same way.

Configuration

The phone companion provides a simple config page:

• “Use Internet (MET Norway) for rise/set” (preferred; falls back to local computation on failure)
• Units: metric (Celsius, km/h) or imperial (Fahrenheit, mph), defaulting from the existing location heuristic
• Corner update cycle: 5s, 10s, 30s, or 60s

Code layout

• src/c/pebble-yes-watch.c: app lifecycle, AppMessage receive, persistence
• src/c/yes_draw.c: all rendering (rings, wedges, hand, moon disk, loading screen)
• src/c/yes_astro.c: watch-side sunrise/sunset fallback (fixed-point, libm-free)
• src/pkjs/index.js: phone-side GPS, MET Norway fetch (preferred), local astro fallback, geofencing