{
  "added_at": "2026-11-09",
  "additional_evidence_urls": [
    "https://github.com/Pioszym/ha-c14/blob/3746e031414c899eb939ffdc5395b4592f613a62/README.md"
  ],
  "category": "reconstruction-cases",
  "class": "hardware",
  "description_en": "ha-c14 documents the C14 RS-485 bus between a COMPIT AERO 3B ventilator and Nano Color CTP room panel and implements an ESPHome bridge for ESP32. Its protocol notes describe 30-byte frames, master cycles and device roles; the YAML package parses frames and exposes controls and sensors to Home Assistant.",
  "description_zh": "ha-c14 记录 COMPIT AERO 3B 新风机与 Nano Color CTP 室内面板之间的 C14 RS-485 总线，并为 ESP32 实现 ESPHome 桥接。协议文档描述 30 字节帧、主设备通信周期和设备角色；YAML 包解析帧并向 Home Assistant 提供控制项和传感器。",
  "entry_url": "https://awesomerea.org/resources/ha-c14-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/ha-c14-case/",
  "evidence_class": 2,
  "evidence_status": "observed",
  "evidence_url": "https://github.com/Pioszym/ha-c14/blob/3746e031414c899eb939ffdc5395b4592f613a62/PROTOCOL.md",
  "group": "cases",
  "id": "ha-c14-case",
  "json_url": "https://awesomerea.org/resources/ha-c14-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/ha-c14-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/ha-c14-case/index.md",
  "name": "ha-c14: reconstructing the C14 ventilator bus protocol",
  "name_zh": "ha-c14：重建 C14 新风机总线协议",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "prerequisites",
    "limits",
    "license"
  ],
  "requirements": [
    "An ESP32-compatible board and a 3.3 V RS-485 interface connected to the C14 bus are required.",
    "ESPHome and Home Assistant are used for the provided integration.",
    "Protocol reverse engineering is ongoing and some fields remain unresolved.",
    "Documentation is CC BY-SA 4.0; firmware code is MIT."
  ],
  "requirements_zh": [
    "需要兼容的 ESP32 开发板，以及接入 C14 总线的 3.3 V RS-485 接口。",
    "提供的集成使用 ESPHome 和 Home Assistant。",
    "协议逆向仍在进行，部分字段尚未解析。",
    "文档采用 CC BY-SA 4.0，固件代码采用 MIT 许可证。"
  ],
  "scope": "unknown",
  "targets": [
    "protocol"
  ],
  "url": "https://github.com/Pioszym/ha-c14",
  "verification": "source-reviewed",
  "verified_at": "2026-11-07"
}