qmk_firmware/keyboards/bm16a/info.json

{
    "keyboard_name": "bm16a",
    "url": "",
    "maintainer": "qmk",
    "width": 4,
    "height": 4,
    "layouts": {
      "LAYOUT_ortho_4x4": {
        "key_count": 16,
        "layout": [
          {"x":0, "y":0},
          {"x":1, "y":0},
          {"x":2, "y":0},
          {"x":3, "y":0},
          {"x":0, "y":1},
          {"x":1, "y":1},
          {"x":2, "y":1},
          {"x":3, "y":1},
          {"x":0, "y":2},
          {"x":1, "y":2},
          {"x":2, "y":2},
          {"x":3, "y":2},
          {"x":0, "y":3},
          {"x":1, "y":3},
          {"x":2, "y":3},
          {"x":3, "y":3}
        ]
      }
    }
  }