{
  "added_at": "2026-11-08",
  "additional_evidence_urls": [
    "https://github.com/eteriall/katasymbol-e12-lab/blob/9e1d79fa1d0deae7f6683d66995d791c2ce5ea8b/LICENSE"
  ],
  "category": "reconstruction-cases",
  "class": "hardware",
  "description_en": "KATASYMBOL E12 Lab reconstructs BLE printing for E12-class label makers in Python. It combines a protocol library, command-line printer, Tkinter GUI and raw command harness, documenting GATT characteristics, 0x7E 0x5A command frames and compressed 512-byte raster frames.",
  "description_zh": "KATASYMBOL E12 Lab 用 Python 重建 E12 类标签机的 BLE 打印。项目提供协议库、命令行工具、Tkinter 界面和原始指令实验程序，并记录 GATT 特征值、0x7E 0x5A 指令帧及压缩的 512 字节栅格帧。",
  "entry_url": "https://awesomerea.org/resources/katasymbol-e12-lab-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/katasymbol-e12-lab-case/",
  "evidence_class": 2,
  "evidence_status": "observed",
  "evidence_url": "https://github.com/eteriall/katasymbol-e12-lab/blob/9e1d79fa1d0deae7f6683d66995d791c2ce5ea8b/README.md",
  "group": "cases",
  "id": "katasymbol-e12-lab-case",
  "json_url": "https://awesomerea.org/resources/katasymbol-e12-lab-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/katasymbol-e12-lab-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/katasymbol-e12-lab-case/index.md",
  "name": "KATASYMBOL E12 Lab: reconstructing BLE label printing",
  "name_zh": "KATASYMBOL E12 Lab：重建 BLE 标签打印",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "testing",
    "limits",
    "license"
  ],
  "requirements": [
    "Python 3.10 or later and an E12-class BLE label printer are required.",
    "The author reports the most reliable path on a 96-dot, 12 mm E12 printer using service fee7 and characteristic fec1.",
    "Command timing and status behavior may differ across firmware revisions.",
    "MIT license."
  ],
  "requirements_zh": [
    "需要 Python 3.10 或更新版本及 E12 类 BLE 标签打印机。",
    "作者报告最稳定的路径使用 96 点、12 毫米的 E12 打印机，以及 fee7 服务和 fec1 特征值。",
    "不同固件版本的指令时序与状态行为可能不同。",
    "MIT 许可证。"
  ],
  "scope": "unknown",
  "targets": [
    "protocol"
  ],
  "url": "https://github.com/eteriall/katasymbol-e12-lab",
  "verification": "source-reviewed",
  "verified_at": "2026-11-06"
}