{
  "added_at": "2026-11-08",
  "category": "reconstruction-cases",
  "class": "hardware",
  "description_en": "The earbud-case LED display study reconstructs the pinout and electrical drive map of an unmarked charging-case display. It documents 31 segments on eight charlieplexed lines, including ribbon-finger wiring and anode/cathode combinations, and supplies an ESP32-C3 driver and serial probing sketch.",
  "description_zh": "该耳机盒 LED 显示屏研究还原了无标识模块的引脚和电气驱动映射。文档列出 8 条查理复用线路上的 31 个显示段、排线触点接线及阳极和阴极组合，并提供 ESP32-C3 驱动和串口探测程序。",
  "entry_url": "https://awesomerea.org/resources/earbud-led-display-map-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/earbud-led-display-map-case/",
  "evidence_class": 2,
  "evidence_status": "observed",
  "evidence_url": "https://github.com/lifetreelee/earbud-led-display-map/blob/dc77459917360d04a2137c8c0e371a5aa00617f6/README.md",
  "group": "cases",
  "id": "earbud-led-display-map-case",
  "json_url": "https://awesomerea.org/resources/earbud-led-display-map-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/earbud-led-display-map-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/earbud-led-display-map-case/index.md",
  "name": "Earbud-case LED display: a probed pinout and segment map",
  "name_zh": "Earbud-case LED display：实测引脚与段码映射",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "limits",
    "license"
  ],
  "requirements": [
    "The documented driver uses an ESP32-C3, GPIO wiring and a 1 kΩ series resistor on each line.",
    "The upper and lower hundreds-stub segments, separate outline edges, current and exact scan rate remain unresolved.",
    "MIT license."
  ],
  "requirements_zh": [
    "文档中的驱动使用 ESP32-C3 和 GPIO 接线，每条线路串联 1 kΩ 电阻。",
    "百位“1”的上下段、轮廓边缘的细分、电流与准确扫描频率仍未确定。",
    "采用 MIT 许可证。"
  ],
  "scope": "unknown",
  "targets": [
    "firmware"
  ],
  "url": "https://github.com/lifetreelee/earbud-led-display-map",
  "verification": "source-reviewed",
  "verified_at": "2026-11-06"
}