usb_wall_h = 4.54 - 2.04;
usb_ceil_th = 0.425;
-side_wall_th = 1.5;
+side_wall_th = 1.5; // XXXX rename wall_th
board_l = 17.56 + 0.2;
board_w = 19.14 + 0.2;
// egress_w = 8.0;
wall_y_min = -board_l - side_wall_th; // XXXX remove
-main_y_min = -board_l - side_wall_th;
ceil_y_min = wall_y_min - 5;;
small_walls = [
strain_groove_d = 2;
strain_groove_w = 3;
+cable_space_z = 6;
+cable_dia = 5;
+bottom_floor_th = 1.5;
+
+fit_gap_z = 0.5;
+fit_gap_y = 0.25;
+side_x_gap = 0.5;
+
+cover_ceil_th = 0.9;
+
// calculated
+top_top_z = usb_wall_h;
+top_base_z = -board_th;
+bottom_base_z = top_base_z - cable_space_z - bottom_floor_th;;
+
+front_y_max = front_wall_th;
+main_y_min = -board_l - side_wall_th;
+
strain_0_y_c = main_y_min - strain_w/2;
strain_1_y_c = strain_0_y_c - strain_pitch_along;
total_y_min = strain_1_y_c - strain_w/2 - side_wall_th;
+bottom_wall_top_z = (top_top_z + top_base_z) * 0.5 - fit_gap_z/2;
+cover_wall_bot_z = (top_top_z + top_base_z) * 0.5 + fit_gap_z/2;
+cover_top_z = top_top_z + cover_ceil_th;
+
+top_side_wall_x = +board_w/2 + side_wall_th;
+total_side_wall_x = top_side_wall_x + side_wall_th + side_x_gap;
+
module BothSides(){
for (m=[0,1]) {
mirror([m,0]) {
TopCeilPlan();
linextr(-board_th, usb_wall_h)
TopMainWallsPlan();
+ BothSides()
+ linextr(cover_wall_bot_z, top_top_z)
+ rectfromto([ -(board_w/2 + 0.1), total_y_min ],
+ [ -total_side_wall_x, main_y_min - fit_gap_y ]);
}
for (y_c = [strain_0_y_c, strain_1_y_c]) {
}
}
linextr_y_xz(total_y_min-1, main_y_min)
- translate([0, -board_th])
+ translate([0, top_base_z])
scale([1, strain_groove_d/strain_groove_w])
circle(strain_groove_w/2, $fn = 8);
}
}
+module TopElevationForCutout(){
+ rectfromto([ -(top_side_wall_x + side_x_gap), top_base_z ],
+ [ +(top_side_wall_x + side_x_gap), top_top_z ]);
+}
+module BottomMainElevation(){
+ difference(){
+ rectfromto([ -total_side_wall_x, bottom_base_z ],
+ [ +total_side_wall_x, bottom_wall_top_z ]);
+
+ TopElevationForCutout();
+ }
+}
module Bottom(){ ////toplevel
+ difference(){
+ union(){
+ linextr_y_xz(total_y_min, front_y_max)
+ BottomMainElevation();
+ }
+
+ linextr_y_xz(total_y_min + side_wall_th,
+ front_y_max - side_wall_th)
+ rectfromto([ -board_w/2, bottom_base_z + bottom_floor_th ],
+ [ +board_w/2, 20 ]);
+
+ linextr_y_xz(total_y_min - 1,
+ total_y_min + side_wall_th + 1){
+ translate([ 0, top_base_z ]){
+ hull(){
+ translate([ 0, -cable_dia/2 ])
+ circle(r = cable_dia/2, $fa = 10, $fs = 1);
+ square([ cable_dia, 0.1 ], center=true);
+ }
+ }
+ }
+ }
+}
+
+module CoverMainElevation(){
+ difference(){
+ rectfromto([ -total_side_wall_x, cover_wall_bot_z ],
+ [ +total_side_wall_x, cover_top_z ]);
+
+ TopElevationForCutout();
+ }
+}
+module Cover(){ ////toplevel
+ linextr_y_xz(main_y_min, front_y_max)
+ CoverMainElevation();
+}
+
+module BottomDemo(){ ////toplevel
+ translate([0, 0, -0.25]) Bottom();
+ %Top();
+ translate([0, 0, +0.25]) Cover();
}