[
  {
    "type": "hinge",
    "id": "hinge_base_arm",
    "a": "base",
    "b": "arm",
    "anchorA": [0, 0.5, 0],
    "anchorB": [0, -3, 0],
    "axisA": [1, 0, 0],
    "axisB": [1, 0, 0],
    "enabled": true,
    "params": { "stiffness": 0.0, "damping": 0.006 }
  },
  {
    "type": "fixed",
    "id": "fixed_arm_weight",
    "a": "arm",
    "b": "counterweight",
    "anchorA": [0, -3, 0],
    "anchorB": [0, 0, -1.1],
    "enabled": true
  }
]