# 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](https://workos.com/init/badge): Anatomy, blueprints, toolchain, pinout, and primary sources.
- [Install the conference firmware](https://workos.com/init/badge/install): Every init() badge ships with the conference firmware. Put it back from desktop Chrome or Edge over USB. The installer checks the board's storage layout before writing and verifies the badge clock after restart.
- [Report a badge issue](https://github.com/chantastic/m5stack-stopwatch-authkit/issues/new): Include the installer's build details and steps to reproduce.
- [Agent skill](https://workos.com/init/badge/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-13-c25k/)
- [Sign in with AuthKit](https://esptember.com/day/day-31-authkit/): WorkOS device authorization with a QR and a human code.
- [Stay signed in](https://esptember.com/day/day-32-connected/)
- [Connect accounts with Pipes](https://esptember.com/day/day-33-pipes/)
- [ESPtember agent index](https://esptember.com/llms.txt)

Hardware sources reviewed 2026-09-16. The general hardware guide was not qualified by flashing a physical kit.