# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1390220961 -3600
# Node ID 0bb7aba59091a727f28815352be978646d9e053b
# Parent  e8b49044b67916cc179ab8756c2823f3413975b3
Made the left and right bumps in the PCB support struts different.
Added some notes about the edge connector thickness.

diff -r e8b49044b679 -r 0bb7aba59091 cartridge.scad
--- a/cartridge.scad	Mon Jan 20 12:03:04 2014 +0100
+++ b/cartridge.scad	Mon Jan 20 13:29:21 2014 +0100
@@ -78,6 +78,12 @@
 	edge_connector_cutout_back_depth = 3.0;
 	edge_connector_cutout_back_width = 57.0;
 
+	/*
+	Edge connectors are themselves 0.05" or approximately 1.27mm in
+	thickness according to the Acorn Electron Cartridge Interface Specification
+	(Acorn Support Application Group Note 014).
+	*/
+
 	/* Side thicknesses. */
 
 	front = 2;
@@ -107,8 +113,10 @@
 
 	pcb_back_support_bump_width = pcb_front_support_width;
 	pcb_back_support_bump_depth = 1.0;
-	pcb_back_support_bump_height = 14.3;
-	pcb_back_support_bump_offset_from_bottom = 26.0;
+	pcb_back_support_left_bump_height = 14.3;
+	pcb_back_support_right_bump_height = 11.7;
+	pcb_back_support_left_bump_offset_from_bottom = 26.0;
+	pcb_back_support_right_bump_offset_from_bottom = 28.6;
 
 	translate([0, -20, 0])
 	difference() {
@@ -282,10 +290,11 @@
 						-pcb_back_support_depth / 2 -
 							pcb_back_support_bump_depth / 2,
 						-pcb_back_support_height / 2 +
-							pcb_back_support_bump_offset_from_bottom])
+							pcb_back_support_left_bump_offset_from_bottom])
 						cube([pcb_back_support_bump_width,
 							pcb_back_support_bump_depth,
-							pcb_back_support_bump_height], center = true);
+							pcb_back_support_left_bump_height],
+							center = true);
 				}
 
 			translate([edge_connector_cutout_back_width / 2 -
@@ -301,10 +310,12 @@
 						-pcb_back_support_depth / 2 -
 							pcb_back_support_bump_depth / 2,
 						-pcb_back_support_height / 2 +
-							pcb_back_support_bump_offset_from_bottom])
+							pcb_back_support_right_bump_offset_from_bottom
+							])
 						cube([pcb_back_support_bump_width,
 							pcb_back_support_bump_depth,
-							pcb_back_support_bump_height], center = true);
+							pcb_back_support_right_bump_height],
+							center = true);
 				}
 		}