Create electronics project box model

electronics/project-box/LICENSE

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+This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.

electronics/project-box/README.md

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+# Electronics project box
+
+![This model is a work in progress][work-in-progress-badge]
+[![CC-BY-SA-4.0 license][license-badge]][license]
+
+Project for for electronics projects
+
+![Model render](images/readme/demo.png)
+
+## License
+
+This model is licensed under [Creative Commons (4.0 International License) Attribution-ShareAlike][license].
+
+
+[license]: http://creativecommons.org/licenses/by-sa/4.0/
+[license-badge]: /_static/license-badge-cc-by-sa-4.0.svg
+[work-in-progress-badge]: /_static/work-in-progress-badge.svg

electronics/project-box/SConscript

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+Import("env")
+b = ModelBuilder(env)
+
+model = "project-box.scad"
+
+dimensions = [
+    [
+        (45, 32, 25),
+    ],
+]
+
+for opts in GenerateOptions(part=["lid", "box"], dims=dimensions):
+    b.STL(
+        f"{opts.part}-{opts.dims[0]}x{opts.dims[1]}x{opts.dims[2]}.stl",
+        model,
+        {
+            "Part": opts.part,
+            "Width": opts.dims[0],
+            "Length": opts.dims[1],
+            "Height": opts.dims[2],
+        },
+    )
+b.Image("demo.png", model, {"Part": "all"})
+
+b.add_default_targets()
+
+# vim: ft=python

electronics/project-box/project-box.scad

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+/*
+ * Electronics project box
+ * By smkent (GitHub) / bulbasaur0 (Printables)
+ *
+ * Licensed under Creative Commons (4.0 International License) Attribution-ShareAlike
+ */
+
+/* [Rendering Options] */
+Part = "all"; // [all: All, box: Box, lid: Lid]
+
+/* [Size] */
+Width = 50;
+Length = 40;
+Height = 30;
+Thickness = 2.4;
+Screw_Diameter = 3.5;
+Insert_Diameter = 4.5;
+Insert_Depth = 10;
+
+/* [Advanced Options] */
+Screw_Inset = 4;
+Corner_Radius = 3; // [0:0.1:5]
+Edge_Radius = 1.5; // [0:0.1:4]
+Screw_Count = 4; // [2: 2, 4: 4]
+
+/* [Development Toggles] */
+
+module __end_customizer_options__() { }
+
+// Constants //
+
+$fa = $preview ? $fa : 2;
+$fs = $preview ? $fs : 0.4;
+
+edge_radius = Edge_Radius;
+screw_ht = Insert_Depth;
+slop = 0.001;
+
+// Modules //
+
+module hull_pair(height) {
+    slop = 0.001;
+    hull() {
+        for (child_obj = [
+            // Child index, height offset
+            [0, 0],
+            [1, height - slop]
+        ]) {
+            translate([0, 0, child_obj[1]])
+            linear_extrude(height=slop)
+            children(child_obj[0]);
+        }
+    }
+}
+
+module round_3d(radius = edge_radius) {
+    if (radius == 0) {
+        children();
+    } else {
+        render()
+        minkowski() {
+            children();
+            for (mz = [0, 1])
+            mirror([0, 0, mz])
+            cylinder(r1=radius, r2=0, h=radius);
+        }
+    }
+}
+
+module at_screws() {
+    if (Screw_Count == 2) {
+        for (m = [0, 1])
+        mirror([m, 0])
+        mirror([0, m])
+        translate([Width / 2 - Screw_Inset, Length / 2 - Screw_Inset])
+        children();
+    } else {
+        for (mx = [0, 1], my = [0, 1])
+        mirror([mx, 0])
+        mirror([0, my])
+        translate([Width / 2 - Screw_Inset, Length / 2 - Screw_Inset])
+        children();
+    }
+}
+
+module box_shape(radius=Corner_Radius) {
+    offset(r=radius)
+    offset(r=-radius)
+    square([Width, Length], center=true);
+}
+
+module box_interior() {
+    translate([0, 0, Edge_Radius]) {
+        screw_corner = Insert_Diameter + Screw_Inset;
+        translate([0, 0, (Height - screw_ht - screw_corner) - Edge_Radius + Thickness]) {
+            translate([0, 0, Edge_Radius])
+            hull_pair(screw_corner) {
+                box_shape();
+                offset(r=-screw_corner)
+                box_shape();
+            }
+            translate([0, 0, 0])
+            linear_extrude(height=Edge_Radius)
+            box_shape();
+        }
+
+        translate([0, 0, Thickness])
+        translate([0, 0, Edge_Radius])
+        round_3d()
+        union() {
+            linear_extrude(height=(Height - screw_ht - screw_corner) - Edge_Radius * 2)
+            difference() {
+                offset(r=-Edge_Radius)
+                box_shape();
+            }
+            interior_corner_radius = max(0.5, (Corner_Radius - Thickness));
+            linear_extrude(height=Height + Thickness * 2 - Edge_Radius * 2)
+            offset(r=interior_corner_radius)
+            offset(r=-interior_corner_radius)
+            difference() {
+                offset(r=-Edge_Radius)
+                box_shape();
+                at_screws()
+                union() {
+                    r = Insert_Diameter + Edge_Radius;
+                    circle(r=r);
+                    for (tr = [[0, -r], [-r, 0]])
+                    translate(tr)
+                    square([r, r]);
+                }
+            }
+        }
+    }
+}
+
+module box_body() {
+    translate([0, 0, Edge_Radius])
+    round_3d()
+    linear_extrude(height=Height + Thickness * 2 - Edge_Radius * 2)
+    offset(r=Thickness)
+    offset(r=-Edge_Radius)
+    box_shape();
+}
+
+module box() {
+    difference() {
+        intersection() {
+            box_body();
+            linear_extrude(height=Height + Thickness)
+            offset(r=Thickness)
+            box_shape(radius=0);
+        }
+        box_interior();
+        at_screws()
+        translate([0, 0, Height - screw_ht + Thickness])
+        cylinder(d=Insert_Diameter, h=screw_ht + Thickness);
+        all_cutouts();
+    }
+}
+
+module lid() {
+    difference() {
+        intersection() {
+            box_body();
+            translate([0, 0, Height + Thickness])
+            linear_extrude(height=Thickness)
+            offset(r=Thickness)
+            box_shape(radius=0);
+        }
+        at_screws()
+        translate([0, 0, Height - screw_ht + Thickness])
+        cylinder(d=Screw_Diameter, h=screw_ht + Thickness);
+        all_cutouts();
+    }
+}
+
+module all_cutouts() {
+    // Add custom cutouts here
+}
+
+module main() {
+    if (Part == "all" || Part == "box") {
+        color("lightsteelblue", 0.8)
+        render()
+        box();
+    }
+    if (Part == "all" || Part == "lid") {
+        color("lightgreen", 0.5)
+        translate([0, 0, (Part == "lid" ? -(Height + Thickness) : 0)])
+        render()
+        lid();
+    }
+}
+
+main();