chore: add vertical stand OpenSCAD model

Co-authored-by: Cursor <cursoragent@cursor.com>

led_bar_vertical_stand.scad

@@ -0,0 +1,123 @@
+// Parametric LED bar vertical stand socket
+// For a bar nominally 14 x 17 mm, 2 m long.
+// This part is intended to be screwed to an MDF base.
+
+// -------------------------
+// User parameters
+// -------------------------
+bar_w = 14;                 // Bar width (mm)
+bar_d = 17;                 // Bar depth (mm)
+clearance = 0.4;            // Total clearance added to each axis (mm)
+
+socket_height = 36;         // Height of printed socket body (mm)
+wall = 3.2;                 // Socket wall thickness (mm)
+base_thickness = 5;         // Printed bottom plate thickness (mm)
+
+// USB cable/connector side opening
+usb_notch_enable = true;
+usb_notch_w = 11;
+usb_notch_h = 9;
+usb_notch_from_bottom = 6;
+usb_notch_side = "right";   // "right" or "left"
+
+// Mounting ears for MDF screws
+ear_enable = true;
+ear_len = 16;
+ear_w = 16;
+ear_thickness = base_thickness;
+screw_hole_d = 4.2;         // M4 clearance. Use 3.4 for M3.
+screw_hole_edge = 5.5;      // Hole center offset from ear outer corner
+
+// Optional clamp lip at top to reduce wobble
+top_lip_enable = true;
+top_lip_depth = 2.0;        // Intrudes into opening on each side
+top_lip_height = 3.0;
+
+$fn = 48;
+
+// -------------------------
+// Derived
+// -------------------------
+inner_w = bar_w + clearance;
+inner_d = bar_d + clearance;
+
+outer_w = inner_w + wall * 2;
+outer_d = inner_d + wall * 2;
+outer_h = socket_height;
+
+module screw_hole() {
+    cylinder(h = ear_thickness + 0.2, d = screw_hole_d);
+}
+
+module mounting_ear(sign_y = 1) {
+    translate([outer_w / 2, sign_y * (outer_d / 2), 0])
+    cube([ear_len, ear_w, ear_thickness], center = false);
+}
+
+module top_lip() {
+    if (top_lip_enable) {
+        // Front and back lips at the top of the socket.
+        translate([wall, wall, outer_h - top_lip_height])
+            cube([top_lip_depth, inner_d, top_lip_height]);
+
+        translate([outer_w - wall - top_lip_depth, wall, outer_h - top_lip_height])
+            cube([top_lip_depth, inner_d, top_lip_height]);
+    }
+}
+
+difference() {
+    union() {
+        // Main body
+        cube([outer_w, outer_d, outer_h], center = false);
+
+        // Base plate under socket for stiffness
+        translate([0, 0, -base_thickness])
+            cube([outer_w, outer_d, base_thickness], center = false);
+
+        // Mounting ears
+        if (ear_enable) {
+            translate([0, 0, -ear_thickness]) {
+                mounting_ear(1);
+                mounting_ear(-1);
+            }
+        }
+
+        top_lip();
+    }
+
+    // Main bar cavity
+    translate([wall, wall, 0])
+        cube([inner_w, inner_d, outer_h + 0.2], center = false);
+
+    // USB side notch
+    if (usb_notch_enable) {
+        if (usb_notch_side == "right") {
+            translate([outer_w - wall - 0.1, (outer_d - usb_notch_w) / 2, usb_notch_from_bottom])
+                cube([wall + 0.3, usb_notch_w, usb_notch_h], center = false);
+        } else {
+            translate([-0.2, (outer_d - usb_notch_w) / 2, usb_notch_from_bottom])
+                cube([wall + 0.3, usb_notch_w, usb_notch_h], center = false);
+        }
+    }
+
+    // Screw holes in ears
+    if (ear_enable) {
+        // Upper ear hole
+        translate([
+            outer_w / 2 + ear_len - screw_hole_edge,
+            outer_d / 2 + ear_w - screw_hole_edge,
+            -ear_thickness - 0.05
+        ]) screw_hole();
+
+        // Lower ear hole
+        translate([
+            outer_w / 2 + ear_len - screw_hole_edge,
+            -outer_d / 2 + screw_hole_edge,
+            -ear_thickness - 0.05
+        ]) screw_hole();
+    }
+}
+
+// Print orientation helper:
+// Keep the base/ears on the bed.
+// If fit is tight, increase clearance to 0.5 or 0.6.