# WorkOS init() StopWatch

> A human and agent reference for M5Stack StopWatch C152 dev kits. This board uses ESP32-S3R8 and a 466 × 466 round AMOLED. Do not confuse it with Waveshare round-display boards.

## Local guide

- [Human reference](/): Setup, hardware, project links, and recovery resources. Alto sign-in required at the subdomain root.
- [Public reference](/stopwatch): The same page without sign-in.
- [Conference badge installer](/stopwatch/install/): Install the alpha conference badge from desktop Chrome using USB. The installer checks the exact board layout and verifies the badge clock after restart.
- [Report a badge issue](https://github.com/chantastic/m5stack-stopwatch-authkit/issues/new): Include the build ID and steps to reproduce.
- [Agent skill](/stopwatch/SKILL.md): Board context, Arduino setup, revision-specific cautions, and task-specific primary sources. Read this first when helping with firmware.

## Primary sources

- [Hardware and pin maps](https://docs.m5stack.com/en/core/StopWatch)
- [Arduino quick-start](https://docs.m5stack.com/en/arduino/stopwatch/program)
- [Display example and minimum versions](https://docs.m5stack.com/en/arduino/stopwatch/display)
- [Factory recovery](https://docs.m5stack.com/en/guide/restore_factory/stopwatch)
- [M5Unified](https://github.com/m5stack/M5Unified)
- [M5GFX](https://github.com/m5stack/M5GFX)

## Community

- [StopWatch Couch to 5K](https://esptember.com/day/day-12-c25k/)
- [ESPtember agent index](https://esptember.com/llms.txt)

Hardware sources reviewed 2026-09-16. The conference installer identifies its release and verification limits separately. The general hardware guide was not qualified by flashing a physical kit.