1 files changed, 116 insertions, 0 deletions
diff --git a/case/pcb_case/shell.scad b/case/pcb_case/shell.scad
new file mode 100644
index 0000000..18139f6
--- /dev/null
+++ b/case/pcb_case/shell.scad
@@ -0,0 +1,116 @@
+include <bolt.scad>
+include <nut.scad>
+include <panel.scad>
+
+use <conversion.scad>
+use <rounded_cube.scad>
+
+module shell_base(pcb_dim, margins, t) {
+	dim = dim_pcb_to_case(pcb_dim, margins, t);
+
+	difference() {
+		// full body
+		rounded_cube(dim=dim, radius=t);
+
+		// cut away upper half
+		translate([0,0,dim[2]/2])
+			cube([dim[0], dim[1], dim[2]/2]);
+
+		// main PCB space
+		translate([3*t, t, t])
+			rounded_cube([dim[0]-6*t, dim[1]-2*t, dim[2]-2*t], t);
+
+		// remove front and back
+		translate([0, 2*t, 2*t])
+			rounded_cube([dim[0], dim[1]-4*t, dim[2]-4*t], t);
+
+		// panel holder
+		for (x_off = [t-panel_dim_0_tol/2, dim[0]-2*t-panel_dim_0_tol/2]) {
+			translate([x_off, t-panel_dim_0_tol/2, t-panel_dim_0_tol/2]) {
+				rounded_cube(
+					[
+						t+panel_dim_0_tol,
+						dim[1]-2*t+panel_dim_1_2_tol,
+						dim[2]-2*t+panel_dim_1_2_tol
+					],
+					t
+				);
+			}
+		}
+
+		// bolt drillings
+		for (x = [dim[0]/4, dim[0]-dim[0]/4]) {
+			translate([x,0,dim[2]/2-1.5*bolt_ds])
+				rotate([-90,0,0])
+					cylinder(d=bolt_ds+bolt_ds_tol, h=1.1*t, $fn=30);
+		}
+	}
+}
+
+module shell_connector(pcb_dim, margins, t) {
+	dim = dim_pcb_to_case(pcb_dim, margins, t);
+
+	size_x = dim[0]-6*t;
+	size_y = bolt_l-t;
+	size_z = dim[2]/2+3*bolt_ds;
+
+	difference () {
+		// base body
+		translate([3*t,dim[1]-t-size_y,0])
+			cube([size_x,size_y,size_z]);
+
+		// bolt holes
+		for (x = [dim[0]/4, dim[0]-dim[0]/4]) {
+			translate([x,dim[1]-t,dim[2]/2+1.5*bolt_ds])
+				rotate([90,0,0])
+					cylinder(d=bolt_ds+bolt_ds_tol, h=size_y, $fn=30);
+		}
+
+		// nut holes
+		for (x = [dim[0]/4, dim[0]-dim[0]/4]) {
+			translate([x, dim[1]-t-size_y, dim[2]/2+1.5*bolt_ds])
+				rotate([-90,0,0])
+					cylinder(d=nut_d+nut_d_tol, h=nut_h, $fn=30);
+		}
+	}
+
+	echo(min_shell_bolt_length=t+size_y);
+}
+
+module pcb_case_shell(pcb_dim, drillings, margins, t) {
+	difference () {
+		union() {
+			shell_base(pcb_dim, margins, t);
+			shell_connector(pcb_dim, margins, t);
+			for (drilling = drillings) {
+				translate([
+					2*t+margins[0][0]+drilling[0],
+					bolt_l+margins[1][0]+drilling[1],
+					0
+				]) cylinder(d=nut_d+2, h=t+margins[2][0], $fn=30);
+			}
+		}
+		for (drilling = drillings) {
+			translate([
+				2*t+margins[0][0]+drilling[0],
+				bolt_l+margins[1][0]+drilling[1],
+				0
+			]) {
+				cylinder(d=bolt_ds+bolt_ds_tol, h=t+margins[2][0], $fn=30);
+				cylinder(d=nut_d+nut_d_tol, h=nut_h, $fn=30);
+			}
+		}
+	}
+}
+
+module pcb_case_shell_bottom(pcb_dim, drillings, margins, t) {
+	pcb_case_shell(pcb_dim, drillings, margins, t);
+}
+
+module pcb_case_shell_top(pcb_dim, margins, t) {
+	dim = dim_pcb_to_case(pcb_dim, margins, t);
+
+	translate([0, dim[1], dim[2]])
+		rotate([180,0,0])
+			pcb_case_shell(pcb_dim, [], margins, t);
+}