{
  "saved_at_utc": "2026-07-04T10:45:32.622426+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "Adafruit 16-Channel 12-bit PWM/Servo Driver - PCA9685",
      "description": "A compact I2C interface board for controlling 16 servo motors or PWM devices with 12-bit resolution, featuring a dual-row pin header for easy integration into electronics projects.",
      "material": "FR-4 PCB with copper traces, plastic housing for connectors"
    },
    "selected_views": [
      {
        "type": "Top",
        "reason": "The Top view provides the most comprehensive overview of the board's layout, showing all surface-mounted components, pin headers, mounting holes, and the overall rectangular shape, which is essential for assembly and placement."
      },
      {
        "type": "Front",
        "reason": "The Front view clearly displays the height of the component stack, the vertical alignment of the pin headers, and the profile of the integrated connector, which is critical for mechanical fit and clearance."
      },
      {
        "type": "Isometric",
        "reason": "The Isometric view offers a 3D perspective that helps visualize the entire assembly, including the relative positions of components and the board's thickness, aiding in understanding the physical form."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          27.65,
          0.0,
          0.74
        ],
        "reason": "This section reveals the internal structure of the board, including the thickness of the PCB substrate and the height of the mounted components, which is necessary for verifying mechanical clearance."
      }
    ],
    "detail_views": [
      {
        "reference": "B",
        "base_view": "Top",
        "anchor": [
          15.0,
          5.0,
          0.0
        ],
        "radius": 10,
        "reason": "This detail magnifies the pin header, showing the precise spacing and alignment of the pins, which is critical for ensuring proper connection to a breadboard or connector."
      }
    ],
    "dimensions": {
      "Top": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 59.0,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 24.1,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            15.0,
            10.0,
            0.0
          ],
          "value_approx": 3.0,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            45.0,
            10.0,
            0.0
          ],
          "value_approx": 3.0,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "value_approx": 20.0,
          "placement": "above",
          "offset_index": 1,
          "tolerance": null
        }
      ],
      "Front": [
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 11.5,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            27.65,
            5.0,
            9.57
          ],
          "value_approx": 1.5,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Isometric": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 59.0,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 24.1,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceZ",
          "match_strategy": "extreme_vertices_z",
          "value_approx": 11.5,
          "placement": "above",
          "offset_index": 1,
          "tolerance": null
        }
      ],
      "Section A-A": [
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            27.65,
            0.0,
            0.74
          ],
          "value_approx": 1.6,
          "placement": "left",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            27.65,
            0.0,
            9.57
          ],
          "value_approx": 1.5,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Detail B": [
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "value_approx": 2.54,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            15.0,
            5.0,
            0.0
          ],
          "value_approx": 1.0,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ]
    }
  }
}