qmk_firmware/keyboards/sweet16/info.json

{
  "keyboard_name": "Sweet 16",
  "url": "",
  "maintainer": "qmk",
  "bootloader": "atmel-dfu",
  "width": 4,
  "height": 4,
  "layouts": {
      "LAYOUT_ortho_4x4": {
          "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}]
      },

      "LAYOUT_numpad_4x4": {
        "layout": [{"x":0, "y":0}, {"x":1, "y":0}, {"x":2, "y":0}, {"x":3, "y":0, "h":2}, {"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":3, "y":2, "h":2}, {"x":0, "y":3, "w":2}, {"x":2, "y":3}]
    }
  }
}