feat(case): make the cover rounded

tompi · Dec 3, 2024 · df2e0aa · df2e0aa
1 parent d97711e
commit df2e0aa
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Showing 3 changed files with 59 additions and 9 deletions.
diff --git a/case/cheapino-top-left.scad b/case/cheapino-top-left.scad
@@ -49,11 +49,10 @@ rotate([0,180,0])
       // -10.6 is the initial size of left/right
       // 4.1 is the intial value of the PCB
       translate([29.2 + (-2), -10.6 - 2, 4.1])
-        // +2 is for top cover
-        linear_extrude(rj45_height + 2)
         // width = front/back, height = left/right
         // Add thickness of 4. 2 left 2 right.
-        square([30 - 7, 16.6 + 4]);
+        // +2 is for top cover
+        roundedcube([30 - 7, 16.6 + 4, rj45_height + 2], false, 0.5, "all");
       // repeat the difference() for initial rj45
       translate([29.2, -10.6, 4.1])
         linear_extrude(rj45_height)
@@ -68,11 +67,10 @@ rotate([0,180,0])
     difference() {
       // x = left/right, y = front/back
       translate([29.5 - 2, 10.2 - 2, 4.1])
-        // +2 is for top cover
-        linear_extrude(mcu_height + 2)
         // width = left/right, height = front/back
         // Add thickness of 4. 2 left 2 right.
-        square([19.5 + 4, 25 + 2]);
+        // +2 is for top cover
+        roundedcube([19.5 + 4, 25 + 2, mcu_height + 2], false, 0.5, "all");
 
       // repeat the difference() for initial mcu cutout
       translate([29.2, 10.2, 4.1])

diff --git a/case/cheapino-top-right.scad b/case/cheapino-top-right.scad
@@ -64,11 +64,10 @@ mirror() {
       // -9.7 is the initial size of left/right
       // 4.1 is the intial value of the PCB
       translate([29.2 + (-2), -9.33 - 2, 4.1])
-        // +2 is for top cover
-        linear_extrude(rj45_height + 2)
         // width = front/back, height = left/right
         // Add thickness of 4. 2 left 2 right.
-        square([30 - 7, 16.6 + 4]);
+        // +2 is for top cover
+        roundedcube([30 - 7, 16.6 + 4, rj45_height + 2], false, 0.5, "all");
       // repeat the difference() for initial rj45
       translate([29.2, -9.33, 4.1])
         linear_extrude(rj45_height)

diff --git a/case/modules.scad b/case/modules.scad
@@ -411,3 +411,56 @@ module mcu_cutout() {
         square([10, 20]);
     }
 }
+
+// More information: https://danielupshaw.com/openscad-rounded-corners/
+// License: Unlicense
+module roundedcube(size = [1, 1, 1], center = false, radius = 0.5, apply_to = "all") {
+	// If single value, convert to [x, y, z] vector
+	size = (size[0] == undef) ? [size, size, size] : size;
+
+	translate_min = radius;
+	translate_xmax = size[0] - radius;
+	translate_ymax = size[1] - radius;
+	translate_zmax = size[2] - radius;
+
+	diameter = radius * 2;
+
+	obj_translate = (center == false) ?
+		[0, 0, 0] : [
+			-(size[0] / 2),
+			-(size[1] / 2),
+			-(size[2] / 2)
+		];
+
+	translate(v = obj_translate) {
+		hull() {
+			for (translate_x = [translate_min, translate_xmax]) {
+				x_at = (translate_x == translate_min) ? "min" : "max";
+				for (translate_y = [translate_min, translate_ymax]) {
+					y_at = (translate_y == translate_min) ? "min" : "max";
+					for (translate_z = [translate_min, translate_zmax]) {
+						z_at = (translate_z == translate_min) ? "min" : "max";
+
+						translate(v = [translate_x, translate_y, translate_z])
+						if (
+							(apply_to == "all") ||
+							(apply_to == "xmin" && x_at == "min") || (apply_to == "xmax" && x_at == "max") ||
+							(apply_to == "ymin" && y_at == "min") || (apply_to == "ymax" && y_at == "max") ||
+							(apply_to == "zmin" && z_at == "min") || (apply_to == "zmax" && z_at == "max")
+						) {
+							sphere(r = radius);
+						} else {
+							rotate =
+								(apply_to == "xmin" || apply_to == "xmax" || apply_to == "x") ? [0, 90, 0] : (
+								(apply_to == "ymin" || apply_to == "ymax" || apply_to == "y") ? [90, 90, 0] :
+								[0, 0, 0]
+							);
+							rotate(a = rotate)
+							cylinder(h = diameter, r = radius, center = true);
+						}
+					}
+				}
+			}
+		}
+	}
+}