qmk_firmware/keyboards/jj4x4/info.json

{
  "keyboard_name": "jj4x4",
  "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}
      ]
    }
  }
}