qmk_firmware/keyboards/gkeyboard/gkb_m16/info.json

{
    "keyboard_name": "GKB-M16",
    "manufacturer": "gkeyboard",
    "url": "",
    "maintainer": "gkeyboard",
    "usb": {
        "vid": "0x474B",
        "pid": "0x4201",
        "device_version": "0.0.1"
    },
    "matrix_pins": {
        "cols": ["F4", "F5", "F6", "F7"],
        "rows": ["D4", "D5", "D6", "D7"]
    },
    "diode_direction": "COL2ROW",
    "processor": "atmega32u4",
    "bootloader": "atmel-dfu",
    "layouts": {
        "LAYOUT_ortho_4x4": {
            "layout": [
              {"matrix": [0, 0], "x": 0, "y": 0},
              {"matrix": [0, 1], "x": 1, "y": 0},
              {"matrix": [0, 2], "x": 2, "y": 0},
              {"matrix": [0, 3], "x": 3, "y": 0},

              {"matrix": [1, 0], "x": 0, "y": 1},
              {"matrix": [1, 1], "x": 1, "y": 1},
              {"matrix": [1, 2], "x": 2, "y": 1},
              {"matrix": [1, 3], "x": 3, "y": 1},

              {"matrix": [2, 0], "x": 0, "y": 2},
              {"matrix": [2, 1], "x": 1, "y": 2},
              {"matrix": [2, 2], "x": 2, "y": 2},
              {"matrix": [2, 3], "x": 3, "y": 2},

              {"matrix": [3, 0], "x": 0, "y": 3},
              {"matrix": [3, 1], "x": 1, "y": 3},
              {"matrix": [3, 2], "x": 2, "y": 3},
              {"matrix": [3, 3], "x": 3, "y": 3}
            ]
          }
        }
      }