digispark-with-cable: wip progress

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/digispark-with-cable.scad b/digispark-with-cable.scad
index 32d65423dd2cf843b758f982f8e79efd29b1474d..90f42bc9c5982c535c26295965292a13507175b6 100644 (file)
--- a/digispark-with-cable.scad
+++ b/digispark-with-cable.scad
@@ -48,6 +48,8 @@ bottom_floor_th = 1.5;
 fit_gap_z = 0.5;
 side_x_gap = 0.5;
 
+cover_ceil_th = 0.425;
+
 // calculated
 
 top_top_z = usb_wall_h;
@@ -61,7 +63,8 @@ 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_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;
@@ -137,13 +140,16 @@ module Top(){ ////toplevel
   }
 }
 
-module BottomMainElevation(){ ////toplevel
+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    ]);
 
-    rectfromto([ -(top_side_wall_x + side_x_gap), top_base_z ],
-              [ +(top_side_wall_x + side_x_gap), 20         ]);
+    TopElevationForCutout();
     rectfromto([ -board_w/2, bottom_base_z + bottom_floor_th ],
               [ +board_w/2, 20         ]);
   }
@@ -153,7 +159,21 @@ module Bottom(){ ////toplevel
     BottomMainElevation();
 }
 
+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
-  Bottom();
-  translate([0, 0, 0.25]) %Top();
+  translate([0, 0, -0.25]) Bottom();
+  %Top();
+  translate([0, 0, +0.25]) Cover();
 }