$fn = 72;
include <keyboard.scad>
module top_case(key_switch_sizes, pcb_screw_holes) {
case_width_top = 317.5000;
case_width_bottom = 320.0000;
case_length_top = 150.0000;
case_length_bottom = 151.5000;
wall_width = 2.5000;
wall_height = 17.2500;
keyboard_x_offset = 12.2500;
keyboard_y_offset = 12.2500;
keyboard_deck_z_offset = wall_height - keyboard_switch_height;
accent_width = 1.0000;
accent_depth = 0.5;
accent_y_stride = (keyboard_pcb_length - accent_width) / 5.0;
accent_y_bottom = keyboard_y_offset;
vent_width = 2.0000;
vent_length = wall_width;
vent_height = 12.0000;
vent_count = 32;
vent_x_first = keyboard_x_offset + keyboard_pcb_width - vent_count * (vent_width + vent_width);
vent_y_offset = case_length_bottom - vent_length;
screw_post_diameter_inner = 3.00;
screw_post_diameter_outer = 6.25;
screw_post_corner_height = 12.00;
screw_post_middle_height = 29.30;
screw_post_upper_y_offset = case_length_bottom - wall_width - 15.00;
screw_post_middle_y_offset = 72.50;
screw_post_lower_y_offset = (keyboard_y_offset - 2 * wall_width) / 2 + wall_width;
screw_post_x_offset = (keyboard_x_offset - 2 * wall_width) / 2 + wall_width;
eps = 0.01;
module fascia() {
difference() {
cube([case_width_bottom, case_length_bottom, wall_width], false);
translate([keyboard_x_offset, keyboard_y_offset, -eps])
cube([keyboard_pcb_width, keyboard_pcb_length, wall_width + 2*eps], false);
}
}
module vents() {
for (i = [0:vent_count]) {
x = vent_x_first + (i * (vent_width + vent_width));
translate([x, vent_y_offset-eps, wall_height - vent_height])
cube([vent_width, vent_length+2*eps, vent_height+eps], false);
}
}
module accents() {
for (y = [accent_y_bottom: accent_y_stride: case_length_bottom]) {
/* Top */
translate([-eps, y, wall_height - accent_depth])
cube([case_width_bottom+2*eps, accent_width, accent_depth+eps], false);
/* Right */
translate([case_width_bottom - accent_depth, y, -eps])
cube([accent_depth+eps, accent_width+eps, wall_height+2*eps], false);
/* Left */
translate([-eps, y, -eps])
cube([accent_depth+eps, accent_width, wall_height+2*eps], false);
}
}
module screw_posts() {
module screw_post(h) {
diameter_inner = 3.00;
diameter_outer = 6.25;
difference() {
cylinder(h, d=diameter_outer);
translate([0, 0, -eps])
cylinder(h + 2*eps, d=diameter_inner);
}
}
posts = [
/* Upper row */
[screw_post_x_offset, screw_post_upper_y_offset, screw_post_corner_height],
[case_width_bottom / 2, case_length_bottom - 10.0, screw_post_middle_height],
[case_width_bottom - screw_post_x_offset, screw_post_upper_y_offset, screw_post_corner_height],
/* Middle row */
[screw_post_x_offset, screw_post_middle_y_offset, screw_post_corner_height],
[case_width_bottom - screw_post_x_offset, screw_post_middle_y_offset, screw_post_corner_height],
/* Bottom row */
[screw_post_x_offset, screw_post_lower_y_offset, screw_post_corner_height],
[case_width_bottom / 2, screw_post_lower_y_offset, screw_post_corner_height],
[case_width_bottom - screw_post_x_offset, screw_post_lower_y_offset, screw_post_corner_height]
];
for (post = posts) {
translate([post[0], post[1], wall_height - wall_width - post[2] - eps])
screw_post(post[2] + eps);
}
}
module supports() {
support_width = 1.2500;
support_height = keyboard_switch_height - wall_width;
aspect_ratio = 3.75 / 12.0;
module support(dimensions, width) {
length = dimensions[0];
height = dimensions[1];
module right_triangle(base) {
hypot = sqrt(2*(base^2));
intersection() {
square([base, base]);
translate([-base, 0, 0])
rotate([0, 0, -45])
square([hypot, hypot]);
}
}
module shape() {
/* Height ratio of lower aspect to upper aspect */
aspect_upper_height = height;
aspect_lower_height = aspect_ratio * height;
/* The length of each individual support aspect */
aspect_length = 1/3 * length;
hypotenuse = sqrt(2*(aspect_length^2));
lower_x_offset = aspect_length - (hypotenuse - aspect_length);
right_triangle(height);
square([length, aspect_lower_height], false);
translate([3 * aspect_length, 0, 0])
mirror([1, 0, 0])
right_triangle(height);
}
translate([0, length, 0])
rotate([-90, 0, -90])
linear_extrude(width)
intersection() {
shape();
square([length, height], false);
}
}
support_x_interval = (keyboard_pcb_width + 2 * wall_width - support_width) / 6;
support_x_offset = keyboard_x_offset - wall_width;
support_y_interval = (keyboard_pcb_length + 2 * wall_width - support_width) / 4;
support_y_offset = keyboard_y_offset;
/* Upper vertical supports */
upper_support_length = case_length_bottom
- keyboard_pcb_length
- keyboard_y_offset
- 2 * wall_width;
upper_support_y_offset = keyboard_y_offset
+ keyboard_pcb_length
+ wall_width;
/* Lower vertical supports */
lower_support_length = keyboard_y_offset - 2 * wall_width;
lower_support_y_offset = wall_width;
/* Left horizontal supports */
left_support_length = keyboard_x_offset - 2 * wall_width;
left_support_x_offset = wall_width;
/* Right horizontal supports */
right_support_length = case_width_bottom
- keyboard_pcb_width
- keyboard_x_offset
- 2 * wall_width;
right_support_x_offset = keyboard_x_offset
+ keyboard_pcb_width
+ wall_width;
for (x = [0: support_x_interval: keyboard_pcb_width + 2 * wall_width]) {
translate([support_x_offset + x,
upper_support_y_offset - eps,
wall_height - wall_width])
support([upper_support_length + 2*eps, support_height], support_width);
translate([support_x_offset + x,
lower_support_y_offset - eps,
wall_height - wall_width])
support([lower_support_length + 2*eps, support_height], support_width);
}
for (y = [0: support_y_interval: keyboard_pcb_length + 2 * wall_width]) {
translate([right_support_x_offset - eps,
support_y_offset + y - wall_width + support_width,
wall_height - wall_width])
rotate([0, 0, -90])
support([right_support_length + 2*eps, support_height], support_width);
translate([left_support_x_offset - eps,
support_y_offset + y - wall_width + support_width,
wall_height - wall_width])
rotate([0, 0, -90])
support([left_support_length + 2*eps, support_height], support_width);
}
}
module body() {
translate([0, 0, wall_height - wall_width])
fascia();
/* Upper */
translate([0, case_length_bottom - wall_width, 0])
cube([case_width_bottom, wall_width, wall_height], false);
/* Right */
translate([case_width_bottom - wall_width, 0, 0])
cube([wall_width, case_length_bottom, wall_height], false);
/* Lower */
cube([case_width_bottom, wall_width, wall_height], false);
/* Left */
cube([wall_width, case_length_bottom, wall_height], false);
}
difference() {
body();
accents();
vents();
}
supports();
screw_posts();
translate([keyboard_x_offset, keyboard_y_offset, keyboard_deck_z_offset])
keyboard_deck(wall_width);
}
top_case(keyboard_switch_sizes, keyboard_pcb_screw_holes);