feat(case): MCU and RJ45 cover

tompi · Dec 3, 2024 · b50d98b · b50d98b
1 parent b0e47ee
commit b50d98b
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Showing 9 changed files with 223 additions and 11 deletions.
diff --git a/case/cheapino-bottom-left.scad b/case/cheapino-bottom-left.scad
@@ -10,7 +10,7 @@ step = 0.05;
 // 2.5 will leave 0.35 at the thinnest(between hotswap and magsafe).
 
 
-$fn=50;
+$fn = $preview ? 10 : 50;
 
 // Rotate so you dont need to do that in extruder
 translate([0,0,2.5])

diff --git a/case/cheapino-bottom-right.scad b/case/cheapino-bottom-right.scad
@@ -10,7 +10,7 @@ step = 0.05;
 // 2.5 will leave 0.35 at the thinnest(between hotswap and magsafe).
 
 
-$fn=50;
+$fn = $preview ? 10 : 50;
 
 // Rotate so you dont need to do that in extruder
 translate([0,0,2.5])

diff --git a/case/cheapino-top-left-with-cover.scad b/case/cheapino-top-left-with-cover.scad
@@ -0,0 +1,82 @@
+height = 95.1738;
+width = 132.6134;
+step = 0.06;
+$fn = $preview ? 10 : 50;
+
+height_translation = 0;
+include <modules.scad>
+
+difference() {
+  case();
+  linear_extrude(4.1) offset(delta=0.45) base();
+
+  // For debug: comment out above 3 lines and comment in this
+  //translate([0,0,4.1])
+  //      board();
+
+  translate([0,0,top_of_pcb]) switch_holes();
+
+  // Diodes
+  translate([0, 0, top_of_pcb]) diodes();
+
+  // RJ45 socket
+  color("cyan") {
+    translate([29.2, -10.6, 4.1])
+      linear_extrude(10)
+      square([30, 16.6]);
+
+    translate([45, -5.8, 2.5])
+      linear_extrude(10)
+      square([15, 7]);
+  }
+
+  mcu_cutout();
+  // mounting holes
+  mounting_hole_inserts();
+
+}
+
+// RJ45 socket cover
+color("purple") {
+  difference() {
+    // x = front/back, y = left/right, z = top/down
+    // -0.8 is thickness of the back cover
+    // -10.6 is the initial size of left/right
+    // 8.1 is the start of the case
+    translate([29.2 + (-0.8), -10.6 - 2, 8.1])
+      // width = front/back, depth = left/right, height = top cover
+      // Add thickness of 4. 2 left 2 right.
+      // (reset mcu_height) + 2 is for top cover thickness
+      roundedcube([30 - 8, 16.6 + 4, rj45_height - 2], false, cover_radius, "xmax");
+
+    // To craete a hole, repeat the difference() for initial rj45
+    translate([29.2, -10.6, 8.1])
+      // 0.5 for tolerance
+      linear_extrude((rj45_height - 4.1) + 0.5)
+      square([30, 16.6]);
+  }
+}
+
+// MCU cover
+color("green") {
+  difference() {
+    // x = left/right, y = front/back
+    // 8.1 is the start of the case
+    translate([29.5 - 1, 10.2 - 3, 8.1])
+      // To set the cube height
+      // width = left/right, height = front/back
+      // Add thickness of 3. 2 outer, 1 inner.
+      // (reset mcu_height) + 2 is for top cover thickness
+      roundedcube([19.5 + 3, 26 + 3, (mcu_height - 4.1) + 2], false, cover_radius, "xmax");
+
+    // To craete a hole, repeat the difference() for initial mcu cutout
+    translate([29.5, 10.2, 8.1])
+      linear_extrude(mcu_height - 3.1)
+      square([19.5, 25]);
+
+    // Repeat USB C port opening
+    translate([34.25, 25.2, 8.1])
+      linear_extrude(mcu_height - 3.1)
+      square([10, 20]);
+  }
+}
diff --git a/case/cheapino-top-left.scad b/case/cheapino-top-left.scad
@@ -1,7 +1,7 @@
 height = 95.1738;
 width = 132.6134;
 step = 0.06;
-$fn=50;
+$fn = $preview ? 10 : 50;
 
 height_translation = 0;
 include <modules.scad>
@@ -38,6 +38,3 @@ mcu_cutout();
 mounting_hole_inserts();
 
 }
-
-
-
diff --git a/case/cheapino-top-right-with-cover.scad b/case/cheapino-top-right-with-cover.scad
@@ -0,0 +1,79 @@
+height = 95.1738;
+width = 132.6134;
+step = 0.06;
+$fn = $preview ? 10 : 50;
+
+height_translation = 0;
+include <modules.scad>
+
+
+mirror() {
+  difference() {
+    case();
+    linear_extrude(4.1) offset(delta=0.45) base();
+
+    // holes and shape for debug
+    //translate([0,0,4.1])
+    //    board();
+
+    translate([0,0,top_of_pcb]) switch_holes();
+
+    // Diodes
+    translate([0, 0, top_of_pcb]) diodes();
+
+    // RJ45 socket
+    color("cyan") {
+      translate([29.2, -9.33, 4.1])
+        linear_extrude(10)
+        square([30, 16.6]);
+
+      translate([45, -4.53, 2.5])
+        linear_extrude(10)
+        square([15, 7]);
+    }
+
+    // EC11 encoder
+    color("pink") {
+      translate([32.75, 16.5, 4.1])
+        linear_extrude(10)
+        square(13);
+
+      translate([32.2, 15, 4.1])
+        linear_extrude(3)
+        square([14.2, 17.5]);
+    }
+
+    // solder bridge pads needs some space
+    color("red")
+      translate([29, -15.53, 4.1])
+      linear_extrude(2)
+      square([19.5, 3.5]);
+
+
+    mounting_hole_inserts();
+  }
+}
+
+
+mirror() {
+  // RJ45 socket cover
+  color("purple") {
+    difference() {
+      // x = front/back, y = left/right, z = top/down
+      // -0.8 is thickness of the back cover
+      // -9.33 is the initial size of left/right
+      // 8.1 is the intial value of the PCB
+      translate([29.2 + (-0.8), -9.33 - 2, 8.1])
+        // width = front/back, depth = left/right, height = top cover
+        // Add thickness of 4. 2 left 2 right.
+        // (reset mcu_height) + 2 is for top cover thickness
+        roundedcube([30 - 8, 16.6 + 4, (rj45_height - 4.1) + 2], false, cover_radius, "xmax");
+
+      // To craete a hole, repeat the difference() for initial rj45
+      translate([29.2, -9.33, 8.1])
+        // 0.5 for tolerance
+        linear_extrude((rj45_height - 4.1) + 0.5)
+        square([30, 16.6]);
+    }
+  }
+}
diff --git a/case/cheapino-top-right.scad b/case/cheapino-top-right.scad
@@ -1,7 +1,7 @@
 height = 95.1738;
 width = 132.6134;
 step = 0.06;
-$fn=50;
+$fn = $preview ? 10 : 50;
 
 height_translation = 0;
 include <modules.scad>

diff --git a/case/cheapino.scad b/case/cheapino.scad
@@ -1,7 +1,7 @@
 height = 95.1738;
 width = 132.6134;
 step = 0.05;
-$fn=30;
+$fn = $preview ? 10 : 30;
 
 height_translation = 0;
 
@@ -78,4 +78,3 @@ module base_line(expanded)
             base();
   }
 }
-
diff --git a/case/modules.scad b/case/modules.scad
@@ -3,6 +3,9 @@ pcb_thickness = 1.6;
 bottom_plate_thickness = 2.5;
 top_of_pcb = bottom_plate_thickness + pcb_thickness;
 
+cover_radius = 2;
+rj45_height = 13;
+mcu_height = 9; // mcu + hotswap
 
 // bottom plate
 module bottom()
@@ -411,3 +414,55 @@ module mcu_cutout() {
     }
 }
 
+// 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);
+						}
+					}
+				}
+			}
+		}
+	}
+}
diff --git a/case/plate.scad b/case/plate.scad
@@ -1,5 +1,5 @@
 
-$fn=100;
+$fn = $preview ? 10 : 100;
 
 height_translation = 0;
 
@@ -10,4 +10,4 @@ module plate()
 }
 
 linear_extrude(1.6)
-      plate();
+      plate();