From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 17 Oct 2023 19:46:23 +0000 (+0100)
Subject: digispark-with-cable: wip progress
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=9f4c26026dceed852942646e8fbfa01d1e536e84

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 90f42bc..5e1136b 100644
--- a/digispark-with-cable.scad
+++ b/digispark-with-cable.scad
@@ -11,7 +11,7 @@ usb_tongue_w_slop = +0.5;
 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;
@@ -43,6 +43,7 @@ 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;
@@ -150,13 +151,31 @@ module BottomMainElevation(){
 	       [ +total_side_wall_x, bottom_wall_top_z    ]);
 
     TopElevationForCutout();
-    rectfromto([ -board_w/2, bottom_base_z + bottom_floor_th ],
-	       [ +board_w/2, 20         ]);
   }
 }
 module Bottom(){ ////toplevel
-  linextr_y_xz(total_y_min, front_y_max)
-    BottomMainElevation();
+  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(){