# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1463007468 -7200
# Node ID c55f2c2b6ce4fe6977492e6ea1dd64609e36a93b
# Parent  3e2724bdfc7e5b597afd6d592757c181e46d9498
Adjusted the height and introduced the missing break in the PCB support.

diff -r 3e2724bdfc7e -r c55f2c2b6ce4 cartridge.scad
--- a/cartridge.scad	Sat Apr 23 16:36:03 2016 +0200
+++ b/cartridge.scad	Thu May 12 00:57:48 2016 +0200
@@ -221,7 +221,7 @@
 	int_connector_width = 86.0;	/* limited to the Plus 1 socket dimensions */
 	int_payload_depth = 14.0;	/* maximum depth in the payload section */
 	int_connector_depth = 11.5;	/* maximum depth in the connector section */
-	int_payload_height = 50.8;	/* space between the top and the floor */
+	int_payload_height = 51.5;	/* space between the top and the floor */
 	int_connector_height = 13.5; 	/* vertical offset of bottom/floor of payload area */
 
 	/* Side thicknesses. */
@@ -406,7 +406,7 @@
 		edge_connector_cutout_back_depth;
 	pcb_back_support_height = height - int_connector_height - top - bottom;
 
-	pcb_front_support_width = 1.2;
+	pcb_front_support_width = pcb_back_support_width;
 	pcb_front_support_depth = int_front_depth;
 	pcb_front_support_height = pcb_back_support_height;
 
@@ -421,9 +421,12 @@
 	pcb_back_support_right_bump_height = 10.7;
 	pcb_back_support_left_bump_offset_from_bottom = 15.1;
 	pcb_back_support_right_bump_offset_from_bottom = 17.6;
+	pcb_back_support_break_from_bottom = 35.3;	/* 36.45 from the above diagram */
+	pcb_back_support_break_height = 13;		/* 11.55 from the above diagram */
 
 	/* Configured by SHORT_PCB. */
-	pcb_back_support_top_bump_height = 3.8;
+	pcb_back_support_top_bump_height = int_payload_height
+		- pcb_back_support_break_from_bottom - pcb_back_support_break_height;
 
 	/* Move the PCB support towards the centre. */
 	pcb_support_margin = 1.75;
@@ -537,7 +540,7 @@
 
 	/* Repeated constructs. */
 
-	module pcb_support(xdir, bump_height, bump_offset) {
+	module pcb_support(xdir, bump_height, bump_offset, break_offset, break_height) {
 
 		/*
 		Translate the support in the stated direction.
@@ -549,18 +552,35 @@
 		translate([xdir *
 			pcb_support_offset_from_centre,
 			edge_connector_cutout_back_depth,
-			int_payload_lower_extent])
+			int_payload_lower_extent]) {
+
+			/*
+			Convert the co-ordinates from being centred on the origin to being
+			"justified" to have either positive or negative x values, and
+			having positive y and z values.
+			*/
+
 			justify(pcb_back_support_width,
 				pcb_back_support_depth,
 				pcb_back_support_height,
-				xdir, 1, 1)
+				xdir, 1, 1) {
+
 				union() {
 
 					/* Underlying support strut. */
 
-					cube([pcb_back_support_width,
-						pcb_back_support_depth,
-						pcb_back_support_height], center = true);
+					difference() {
+						cube([pcb_back_support_width,
+							pcb_back_support_depth,
+							pcb_back_support_height], center = true);
+						cube_at(pcb_back_support_width,
+							pcb_back_support_depth,
+							break_height,
+							0, 1, 1,
+							0,
+							-pcb_back_support_depth / 2,
+							-pcb_back_support_height / 2 + break_offset);
+					}
 
 					/* Middle bump. */
 
@@ -584,6 +604,8 @@
 							pcb_back_support_height / 2 -
 								pcb_back_support_top_bump_height);
 				}
+			}
+		}
 	}
 
 	/* Choose the kind of "lug" in the back piece. */
@@ -1193,9 +1215,13 @@
 
 						if (MODEL == ROM_CARTRIDGE) {
 							pcb_support(-1, pcb_back_support_left_bump_height,
-								pcb_back_support_left_bump_offset_from_bottom);
+								pcb_back_support_left_bump_offset_from_bottom,
+								pcb_back_support_break_from_bottom,
+								pcb_back_support_break_height);
 							pcb_support(1, pcb_back_support_right_bump_height,
-								pcb_back_support_right_bump_offset_from_bottom);
+								pcb_back_support_right_bump_offset_from_bottom,
+								pcb_back_support_break_from_bottom,
+								pcb_back_support_break_height);
 
 							/* Circular "lugs" to hold PCBs in place. */