qmk_firmware/keyboards/shiro/info.json

{
  "keyboard_name": "Shiro",
  "url": "https://github.com/ShinoharaTa/keyboards/blob/master/Shiro/manual/build_guide_ja.md",
  "maintainer": "T.Shinohara",
  "width": 3,
  "height": 5,
  "layouts": {
    "LAYOUT": {
      "key_count": 15,
      "layout": [
        {"x": 0, "y": 0},
        {"x": 1, "y": 0},
        {"x": 2, "y": 0},
        {"x": 0, "y": 1},
        {"x": 1, "y": 1},
        {"x": 2, "y": 1},
        {"x": 0, "y": 2},
        {"x": 1, "y": 2},
        {"x": 2, "y": 2},
        {"x": 0, "y": 3},
        {"x": 1, "y": 3},
        {"x": 2, "y": 3},
        {"x": 0, "y": 4},
        {"x": 1, "y": 4},
        {"x": 2, "y": 4}
      ]
    }
  }
}