Disclaimer

This project is somewhat vibecoded.

Simple Round

An analog watchface for Pebble Round 2 (Gabbro, 260x260) built with Alloy (Moddable JS).

It shows:

• Analog hands and dial markers
• 12/3/6/9 numerals
• Center digital time + date
• Weather icon + temperature
• Clay settings for dark mode, Fahrenheit/Celsius, and 12h/24h time

Platform

• Target: gabbro (Pebble Round 2)
• Display: 260x260 round color e-paper

Build and Run

pebble build && pebble install --emulator gabbro --vnc

Without VSCode/VNC:

pebble build && pebble install --emulator gabbro

Settings

Open settings with:

pebble emu-app-config

Available toggles:

• Dark Mode
• Use Fahrenheit
• Use 24-Hour Time
• Show Digital Time
• Show Date
• Show Weather
• Show Battery
• Only Show Low Battery
• Show Bluetooth
• Show Disconnected BT

Settings and recent weather are persisted in localStorage.

Memory Note

This project uses a custom ModdableCreationRecord in src/c/mdbl.c to increase XS runtime memory (slot and chunk) for stability when using weather fetch + settings updates.

Project Layout

• src/embeddedjs/main.js - watchface rendering, weather, settings handling
• src/pkjs/index.js - Clay init + Pebble proxy wiring
• src/pkjs/config.js - Clay settings schema
• src/c/mdbl.c - C entrypoint and Moddable machine creation

Useful Commands

pebble logs
pebble screenshot screenshot.png --no-open --scale 1