[
  {
    "type": "pcb_board",
    "pcb_board_id": "pcb_board_1",
    "width": 20,
    "height": 15,
    "thickness": 1.6,
    "center": { "x": 10, "y": 7.5 },
    "outline": [
      { "x": 2, "y": 3 },
      { "x": 18, "y": 3 },
      { "x": 18, "y": 7 },
      { "x": 20, "y": 7 },
      { "x": 10, "y": 15 },
      { "x": 0, "y": 7 },
      { "x": 2, "y": 7 }
    ]
  }
]