digispark-with-cable: break out MiddleStrainHoles

[reprap-play.git] / digispark-with-cable.scad

diff --git a/digispark-with-cable.scad b/digispark-with-cable.scad
index 76b905b32eb2a244f9c9ccf1861719fbd6c283bc..54f7e1c03e31531131e3a5691f9031a8d6bf3b5d 100644 (file)
--- a/digispark-with-cable.scad
+++ b/digispark-with-cable.scad
@@ -38,12 +38,12 @@ small_walls = [
 chip_cutout = [[ -sw_to_edge + 4.20,    -3.75 ],
               [ -sw_to_edge + 11.95,  -11.90 ]];
 
-strain_w = 2.0 + 0.5;
-strain_t = 1.0 + 0.5;
+strain_w = 3.5 + 0.5;
+strain_t = 1.5 + 0.5;
 strain_pitch_across = 5;
 strain_pitch_along = 10;
 strain_groove_d = 2;
-strain_groove_w = 3;
+strain_groove_w = 4.5;
 
 cover_strap_c_d_y = 5.5; // from front of board
 cover_registration_sz_y = 2;
@@ -51,7 +51,7 @@ cover_registration_sz_z = 3;
 midbot_registraton_sz_x = 3;
 
 cable_space_z = 6;
-cable_dia = 5;
+cable_dia = 6;
 bottom_floor_th = 1.5;
 
 fit_gap_z = 0.5;
@@ -120,8 +120,6 @@ module NormalStrapCutouts(y_c, z, rot){
 module BottomStrapCutouts(y_c){
   NormalStrapCutouts(y_c, bottom_base_z, -45);
 }
-// XXXX check strap width
-// XXXX check cable diameter
 module CoverStrapCutouts(){
   BothSides(){
     translate([ -total_side_wall_x, -cover_strap_c_d_y, cover_top_z ])
@@ -202,6 +200,14 @@ module MidBotRegistrations(){
   }
 }
 
+module MiddleStrainHoles(){
+  BothSides(){
+    for (y_c = [strain_0_y_c, strain_1_y_c]) {
+      translate([strain_pitch_across/2, y_c, 0])
+       square([ strain_t, strain_w ], center=true);
+    }
+  }
+}
 module Middle(){ ////toplevel
   difference(){
     union(){
@@ -218,13 +224,8 @@ module Middle(){ ////toplevel
       MidBotRegistrations();
     }
 
-    for (y_c = [strain_0_y_c, strain_1_y_c]) {
-      for (x_c = [-1,+1] * strain_pitch_across/2) {
-       translate([x_c, y_c, 0])
-         linextr(-20, 20)
-         square([ strain_t, strain_w ], center=true);
-      }
-    }
+    linextr(-20, 20)
+      MiddleStrainHoles();
     linextr_y_xz(total_y_min-1, main_y_min)
       translate([0, middle_base_z])
       scale([1, strain_groove_d/strain_groove_w])
@@ -314,3 +315,8 @@ module BottomDemo(){ ////toplevel
   %Middle();
   translate([0, 0, +0.25]) Cover();
 }
+module ImpressionDemo(){ ////toplevel
+  color("black") translate([0, 0, -0.25]) Bottom();
+  %Middle();
+  %translate([0, 0, +0.25]) Cover();
+}