// calculated
strap_w = strain_w;
-strap_cutout_z = side_wall_th;
+cover_strap_cutout_z = side_wall_th;
-top_top_z = usb_wall_h;
-top_base_z = -board_th;
-bottom_base_z = top_base_z - cable_space_z - bottom_floor_th;;
+middle_top_z = usb_wall_h;
+middle_base_z = -board_th;
+bottom_base_z = middle_base_z - cable_space_z - bottom_floor_th;;
front_y_max = front_wall_th;
main_y_min = -board_l - side_wall_th;
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;
+bottom_wall_top_z = (middle_top_z + middle_base_z) * 0.5 - fit_gap_z/2;
+cover_wall_bot_z = (middle_top_z + middle_base_z) * 0.5 + fit_gap_z/2;
+cover_top_z = middle_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;
+middle_side_wall_x = +board_w/2 + side_wall_th;
+total_side_wall_x = middle_side_wall_x + side_wall_th + side_x_gap;
cover_registration_c_dy = -cover_strap_c_d_y - strap_w/2
- side_wall_th - cover_registration_sz_y/2;
}
}
}
-module StrapCutouts(y_c, z_top, top_sz_x){
- for (z = [ bottom_base_z, z_top ]) {
- BothSides(){
- translate([ -total_side_wall_x, y_c, z_top ]) {
- cube([ top_sz_x*2,
- strap_w,
- strap_cutout_z*2 ],
- center=true);
- }
- }
+
+module NormalStrapCutouts(y_c, z, rot){
+ BothSides(){
+ translate([ -total_side_wall_x, y_c, z ])
+ rotate([0, rot, 0])
+ cube([ side_wall_th,
+ strap_w,
+ 10 ],
+ center=true);
}
}
-
+module BottomStrapCutouts(y_c){
+ NormalStrapCutouts(y_c, bottom_base_z, -45);
+}
+// XXXX check strap width
+// XXXX check cable diameter
+// XXXX need rear strap
+// XXXX need bottom-to-middle registration
module CoverStrapCutouts(){
- StrapCutouts( -cover_strap_c_d_y, cover_top_z, cover_strap_sz_x );
+ BothSides(){
+ translate([ -total_side_wall_x, -cover_strap_c_d_y, cover_top_z ])
+ cube([ cover_strap_sz_x*2,
+ strap_w,
+ cover_strap_cutout_z*2 ],
+ center=true);
+ }
}
module FrontWallsPlan(slop) {
[ -usb_w/2 - slop, front_wall_th ]);
}
}
-module TopSmallWallsPlan() {
+module MiddleSmallWallsPlan() {
for (m=[0,1]) {
mirror([m,0]) {
rectfromto([ -usb_w/2, -0.01 ],
rectfromto(w[0], w[1]);
}
}
-module TopCeilPlan() {
+module MiddleCeilPlan() {
difference(){
BothSides(){
rectfromto([ -usb_w/2, -0.01 ],
rectfromto(chip_cutout[0], chip_cutout[1]);
}
}
-module TopMainWallsPlan() {
+module MiddleMainWallsPlan() {
BothSides(){
rectfromto([ -board_w/2 - side_wall_th, 0 ],
[ -board_w/2, wall_y_min ]);
cover_wall_bot_z - cover_registration_sz_z ],
[ +total_side_wall_x, cover_top_z ]);
hull(){
- TopElevationForCutout();
- translate([0, -20]) TopElevationForCutout();
+ MiddleElevationForCutout();
+ translate([0, -20]) MiddleElevationForCutout();
}
}
}
}
-module Top(){ ////toplevel
+module Middle(){ ////toplevel
difference(){
union(){
linextr(0, usb_wall_h)
- TopSmallWallsPlan();
+ MiddleSmallWallsPlan();
linextr(usb_wall_h - usb_ceil_th, usb_wall_h)
- TopCeilPlan();
+ MiddleCeilPlan();
linextr(-board_th, usb_wall_h)
- TopMainWallsPlan();
+ MiddleMainWallsPlan();
BothSides()
- linextr(cover_wall_bot_z, top_top_z)
+ linextr(cover_wall_bot_z, middle_top_z)
rectfromto([ -(board_w/2 + 0.1), total_y_min ],
[ -total_side_wall_x, main_y_min - fit_gap_y ]);
}
}
}
linextr_y_xz(total_y_min-1, main_y_min)
- translate([0, top_base_z])
+ translate([0, middle_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 MiddleElevationForCutout(){
+ rectfromto([ -(middle_side_wall_x + side_x_gap), middle_base_z ],
+ [ +(middle_side_wall_x + side_x_gap), middle_top_z ]);
}
module BottomMainElevation(){
difference(){
rectfromto([ -total_side_wall_x, bottom_base_z ],
[ +total_side_wall_x, bottom_wall_top_z ]);
- TopElevationForCutout();
+ MiddleElevationForCutout();
}
}
module Bottom(){ ////toplevel
linextr_y_xz(total_y_min - 1,
total_y_min + side_wall_th + 1){
- translate([ 0, top_base_z ]){
+ translate([ 0, middle_base_z ]){
hull(){
translate([ 0, -cable_dia/2 ])
circle(r = cable_dia/2, $fa = 10, $fs = 1);
CoverRegistrations();
cube([ 1, fit_gap_y*2, fit_gap_z*2 ], center=true);
}
+ BottomStrapCutouts(-cover_strap_c_d_y);
}
}
rectfromto([ -total_side_wall_x, cover_wall_bot_z ],
[ +total_side_wall_x, cover_top_z ]);
- TopElevationForCutout();
+ MiddleElevationForCutout();
}
}
module Cover(){ ////toplevel
module BottomDemo(){ ////toplevel
translate([0, 0, -0.25]) Bottom();
- %Top();
+ %Middle();
translate([0, 0, +0.25]) Cover();
}