qmk-firmware/keyboards/handwired/numpad20/info.json

{
  "keyboard_name": "Numpad 20",
  "manufacturer": "Hexwire",
  "url": "",
  "maintainer": "qmk",
  "usb": {
    "vid": "0xBB80",
    "pid": "0x0504",
    "device_version": "0.0.1"
  },
  "matrix_pins": {
    "cols": ["D1", "D0", "F5", "F4"],
    "rows": ["F6", "B1", "B3", "B6", "B5"]
  },
  "diode_direction": "COL2ROW",
  "processor": "atmega32u4",
  "bootloader": "halfkay",
  "layouts": {
    "LAYOUT": {
      "layout": [
        {"label":"K00", "x":0, "y":0},
        {"label":"K01", "x":1, "y":0},
        {"label":"K02", "x":2, "y":0},
        {"label":"K03", "x":3, "y":0},
        {"label":"K10", "x":0, "y":1},
        {"label":"K11", "x":1, "y":1},
        {"label":"K12", "x":2, "y":1},
        {"label":"K13", "x":3, "y":1},
        {"label":"K20", "x":0, "y":2},
        {"label":"K21", "x":1, "y":2},
        {"label":"K22", "x":2, "y":2},
        {"label":"K23", "x":3, "y":2},
        {"label":"K30", "x":0, "y":3},
        {"label":"K31", "x":1, "y":3},
        {"label":"K32", "x":2, "y":3},
        {"label":"K33", "x":3, "y":3},
        {"label":"K40", "x":0, "y":4},
        {"label":"K41", "x":1, "y":4},
        {"label":"K42", "x":2, "y":4},
        {"label":"K43", "x":3, "y":4}
      ]
    }
  }
}