pdf-page/claude-sonnet-4-6 / tier-4-gp2y0a21yk

```openscad
// Sharp GP2Y0A21YK0F Distance Sensor - External Dimensions Model
// Units: mm
// Coordinate system: center of main body at origin, +Z up, +Y forward

// Key dimensions from datasheet
// Overall width (X): 37mm
// Overall depth (Y): 13mm (lens case depth)
// Main body height (Z): ~13mm (from bottom of bar to top of lens case)

// Body dimensions
body_w = 37;       // total width X
body_d = 13;       // depth Y (reference dimension 13, shown as (18.9-25) includes lens protrusion?)
body_h = 13;       // height Z of main rectangular case portion

// From side view:
// Total height including lens protrusion ~ (18.9-25) is reference for lens center positions
// Main case height: 13mm
// Lens case extends above: 6.3mm total? 
// From the side view: 6.3 (top), 2 (next), 8.4 / 7.2 are internal divisions
// The case appears to be ~13mm tall
// Lens protrusion above case top: ~2mm

// From front view dimensions:
// Width: 37mm total
// Lens emitter center: 4.5mm from left edge (x position)
// Lens detector center: *20±0.1mm from left edge  
// Bar (connector area) extends below main case
// Bar width: 29.5mm (centered?)
// Bar dimensions from bottom view: 7.5 | 4.15 | 16.3  => positions along x

// Heights (Z) from side view:
// Total side height: (18.9~25) reference - this is lens center height range?
// From bottom: PWB 1.2mm, then (3.3) reference, then main body
// Lens case top portion: 6.3mm, step: 2mm, then 8.4 or 7.2mm body

// Let me re-read carefully:
// Side view right side shows: 6.3, 2, then 8.4/7.2 stacked, then 1.2(PWB), (3.3)
// 6.3 = top of lens protrusion height
// 2 = step between lens top and body top
// 8.4 = main body height? or 7.2?
// 1.2 = PWB/connector part below
// (3.3) = reference below

// From the drawing interpretation:
// Main body (lens case box): width=37, depth=13, height=8.4 (or 7.2)
// Lens protrudes above by: 2mm step + 6.3mm = looks like lens housing is 6.3 tall above a 2mm ledge
// Actually: the right side shows dimensions 6.3 and 2 at top, meaning:
//   lens protrusion = 6.3mm total height above body
//   or: 6.3 from some reference, 2mm is a ledge

// Best interpretation based on typical GP2Y0A21 physical measurements:
// Main body: 37 x 13 x 13 mm (W x D x H)  
// Lens protrusion above body: ~2mm
// Connecting bar below: 29.5mm wide, ~3mm tall, extending down from body bottom

// Mounting bar / connector tab dimensions from bottom view:
// 7.5 from left | 4.15 wide | 16.3 to right
// Bar height (Z): ~2.5mm
// Bar total width: 29.5mm  
// Bar depth (Y): same as body ~13mm? or smaller

// Mounting holes: ø3.2, at positions shown
// Left lens (emitter): center at x = 4.5 from left => from center: 4.5 - 37/2 = -14.0
// Right lens (detector): center at x = 20 from left => from center: 20 - 37/2 = 1.5
// Both lenses: R1.75 (diameter 3.5mm)

// Connector/cable at bottom center-ish

// Let me define origin at body center, Z=0 at body bottom face

// === Dimensions ===
bw = 37;    // body width X
bd = 13;    // body depth Y  
bh = 13;    // body height Z (main case)

// Lens protrusion
lens_h = 2.0;   // how much lenses protrude above body top
lens_emitter_r = 1.75;    // emitter lens radius
lens_detector_r = 1.75;   // detector lens radius (ø3.2 hole, R1.75)

// Lens center X positions (from left edge of body)
emitter_x_from_left = 4.5;
detector_x_from_left = 20.0;

// Convert to centered coords
emitter_cx = emitter_x_from_left - bw/2;   // = 4.5 - 18.5 = -14.0
detector_cx = detector_x_from_left - bw/2; // = 20.0 - 18.5 = 1.5

// Lens Y position: centered in body depth, slightly toward front
lens_cy = 0;  // centered in Y

// Connecting bar dimensions
bar_w = 29.5;       // width of bar
bar_h = 3.75;       // height of bar below body (from "3.75" in front view)
bar_d = bd;         // same depth as body

// Mounting holes in bar
// From front view: holes at 3.75 below body bottom, at X positions
// Left hole at ~3.75 from left of bar, right hole 
// Bar left edge from body left edge: (bw - bar_w)/2 = (37-29.5)/2 = 3.75
bar_left_x = -bw/2 + (bw - bar_w)/2;  // = -18.5 + 3.75 = -14.75
// Mounting hole positions: shown in front view
// "10|1" and "14.75" from front view - hole spacing
// Left hole at 3.75 from left of bar? 
// Right hole - the "14.75" total from something
// Let's place holes symmetrically based on drawing
// "1" center mark at 10mm from left, another at 10+1=11? 
// Interpreting: two holes, one at 10mm from left bar edge, one near right
// From "10|1" label and "14.75": hole centers at X= bar_left_x+3.75+... 
// More careful: front view shows R3.75 circles (mounting holes) and dimension 10|1 and 14.75
// The "R3.75" might be corner radius, and ø3.2 is hole diameter
// mounting hole left: at x = bar_left_x + 3.75 from bar left = -14.75+3.75 = -11
// Hmm, let me just place them based on "3.75" spacing from edges and "14.75" span

mount_hole_r = 3.2/2;  // ø3.2 mounting holes
// From drawing the two mounting holes seem to be at:
// Left hole:  x ~ -14.75 + 3.75 = -11  (3.75 from left edge of bar)
// Right hole: x ~ -14.75 + 14.75 - 3.75? 
// The "14.75" dimension in front view appears to span from left bar edge to right hole center
// or between centers. Let's say:
mount_hole_left_x  = bar_left_x + 3.75;         // ~ -11.0
mount_hole_right_x = bar_left_x + 14.75 - 3.75; // ~ -3.75... 
// Actually the dimension "14.75" might be from left of body (not bar):
// mount right = -18.5 + 14.75 = -3.75
// mount left = from "10|1": at 10-18.5 = -8.5? and spacing 1mm? that seems small
// Let me interpret: left hole at x=-14.75+3.75 = from bar left + 3.75
// 14.75 from bar left to right hole center: right hole at bar_left_x + 14.75

mh_left_x  = bar_left_x + 3.75;
mh_right_x = bar_left_x + 14.75;
mh_y       = 0;   // centered in Y
mh_z       = -bh/2 - bar_h/2;  // in middle of bar height

// Cable notch / cutout in bar
notch_w = 4.15;  // from bottom view "4.15"
notch_x = -bw/2 + 7.5 + 4.15/2;  // 7.5 from left, then 4.15 wide
// bottom view: 7.5 | 4.15 | 16.3 along bar
notch_d = 3;    // depth of notch in Y (guessed)
notch_h = bar_h + 0.1; // full bar height

// Cable (simplified as cylinder)
cable_r = 1.5;
cable_len = 20;

// Connector pins (simplified) from bottom view "①②③"
// 3 pins in row at connector area
pin_spacing = 2.0;
pin_r = 0.5;
pin_h = 3.5;  // 2.5+1 from side view "2.5" and "1"
// Pins centered at notch_x, bottom of bar

// === Colors ===
body_color = [0.2, 0.2, 0.2, 1.0];   // dark gray ABS
lens_color = [0.1, 0.1, 0.1, 0.8];   // dark lens (visible light cut-off)
cable_color = [0.8, 0.6, 0.0, 1.0];  // yellow cable

module body() {
    color(body_color) {
        // Main rectangular body case
        translate([0, 0, 0])
            cube([bw, bd, bh], center=true);
    }
}

module lens_protrusions() {
    color(lens_color) {
        // Emitter lens (left) - circular cylindrical protrusion
        translate([emitter_cx, lens_cy, bh/2 + lens_h/2])
            cylinder(r=lens_emitter_r, h=lens_h, center=true, $fn=32);
        
        // Detector lens (right) - circular cylindrical protrusion  
        translate([detector_cx, lens_cy, bh/2 + lens_h/2])
            cylinder(r=lens_detector_r, h=lens_h, center=true, $fn=32);
    }
}

module lens_windows() {
    // Slight indentation / window on top face to show lens apertures
    color([0.15, 0.15, 0.15])
    {
        // Emitter window (slightly recessed into top)
        translate([emitter_cx, lens_cy, bh/2 - 0.5])
            cylinder(r=lens_emitter_r - 0.3, h=1.1, center=true, $fn=32);
        // Detector window 
        translate([detector_cx, lens_cy, bh/2 - 0.5])
            cylinder(r=lens_detector_r - 0.3, h=1.1, center=true, $fn=32);
    }
}

module connecting_bar() {
    color(body_color) {
        difference() {
            // Bar body
            translate([bar_left_x + bar_w/2, 0, -bh/2 - bar_h/2])
                cube([bar_w, bar_d, bar_h], center=true);
            
            // Left mounting hole
            translate([mh_left_x, mh_y, mh_z])
                cylinder(r=mount_hole_r, h=bar_h + 0.1, center=true, $fn=24);
            
            // Right mounting hole
            translate([mh_right_x, mh_y, mh_z])
                cylinder(r=mount_hole_r, h=bar_h + 0.1, center=true, $fn=24);
            
            // Cable cutout notch (open slot from front face)
            translate([notch_x, -bar_d/2, -bh/2 - bar_h/2])
                cube([notch_w, notch_d*2, bar_h + 0.2], center=true);
        }
    }
}

module cable() {
    color(cable_color) {
        // Cable coming out of notch downward (simplified)
        translate([notch_x, -bd/2 + 1, -bh/2 - bar_h - cable_len/2])
            cylinder(r=cable_r, h=cable_len, center=true, $fn=16);
        
        // Small bend toward front
        translate([notch_x, -bd/2 - cable_len/4, -bh/2 - bar_h])
            rotate([0, 90, 0])
            cylinder(r=cable_r, h=0.1, center=true, $fn=16);
    }
}

module connector_pins() {
    // 3 connector pins at bottom of bar (simplified)
    color([0.9, 0.9, 0.0]) {
        for (i = [-1, 0, 1]) {
            translate([notch_x + i * pin_spacing, -bd/2 + 1.5, -bh/2 - bar_h - pin_h/2])
                cylinder(r=pin_r, h=pin_h, center=true, $fn=8);
        }
    }
}

module top_label_ridge() {
    // Slight ridge/stamp area on top (simplified)
    color([0.25, 0.25, 0.25])
    translate([0, 0, bh/2 + 0.3])
        cube([bw - 4, bd - 4, 0.5], center=true);
}

// === Assembly ===
union() {
    body();
    lens_protrusions();
    connecting_bar();
    cable();
    connector_pins();
    top_label_ridge();
}
```