1.1 --- a/cartridge.scad	Thu Aug 13 19:04:50 2015 +0200
     1.2 +++ b/cartridge.scad	Thu Aug 13 19:24:39 2015 +0200
     1.3 @@ -1,5 +1,5 @@
     1.4  /*
     1.5 -Copyright (C) 2014 Paul Boddie
     1.6 +Copyright (C) 2014, 2015 Paul Boddie
     1.7  
     1.8  This program is free software; you can redistribute it and/or modify it under
     1.9  the terms of the GNU General Public License as published by the Free Software
    1.10 @@ -45,6 +45,7 @@
    1.11  
    1.12  	BACK = 1; BACK_SURFACE = 1;
    1.13  	FRONT = 1; FRONT_SURFACE = 1;
    1.14 +	TOP_SURFACE = 1;
    1.15  
    1.16  	/* For printing: APART = 1; PCB = 0; */
    1.17  
    1.18 @@ -430,6 +431,11 @@
    1.19  
    1.20  	wide_pcb_lug_hole_radius = 4.0;
    1.21  
    1.22 +	/* An example feature for use with PCB testing. */
    1.23 +
    1.24 +	feature_width = 15.0; feature_depth = 7.0; feature_height = 40.0;
    1.25 +	feature_height_offset = 10.0;
    1.26 +
    1.27  	/* Repeated constructs. */
    1.28  
    1.29  	module pcb_support(xdir, bump_height, bump_offset) {
    1.30 @@ -598,9 +604,10 @@
    1.31  
    1.32  					/* Top surface for the front piece. */
    1.33  
    1.34 -					cube_at(payload_width, front_depth, top,
    1.35 -						0, -1, 1,
    1.36 -						payload_centre, 0, int_payload_upper_extent);
    1.37 +					if (TOP_SURFACE)
    1.38 +						cube_at(payload_width, front_depth, top,
    1.39 +							0, -1, 1,
    1.40 +							payload_centre, 0, int_payload_upper_extent);
    1.41  				}
    1.42  
    1.43  				difference() {
    1.44 @@ -835,9 +842,10 @@
    1.45  
    1.46  						/* Top of back piece. */
    1.47  
    1.48 -						cube_at(payload_width, back_depth, top,
    1.49 -							0, 1, 1,
    1.50 -							payload_centre, 0, int_payload_upper_extent);
    1.51 +						if (TOP_SURFACE)
    1.52 +							cube_at(payload_width, back_depth, top,
    1.53 +								0, 1, 1,
    1.54 +								payload_centre, 0, int_payload_upper_extent);
    1.55  
    1.56  						/*
    1.57  						The extension of the back to connect with the front. Here, the inside
    1.58 @@ -1172,6 +1180,12 @@
    1.59  								edge_connector_height,
    1.60  								0, -1, -1,
    1.61  								0, edge_connector_cutout_back_depth, 0);
    1.62 +
    1.63 +							/* Feature. */
    1.64 +
    1.65 +							cube_at(feature_width, feature_depth, feature_height,
    1.66 +								0, 1, 1,
    1.67 +								0, edge_connector_cutout_back_depth, feature_height_offset);
    1.68  						}
    1.69  
    1.70  						/* Holes for mounting. */
    1.71 @@ -1239,6 +1253,12 @@
    1.72  								edge_connector_height,
    1.73  								0, -1, -1,
    1.74  								0, edge_connector_cutout_back_depth, 0);
    1.75 +
    1.76 +							/* Feature. */
    1.77 +
    1.78 +							cube_at(feature_width, feature_depth, feature_height,
    1.79 +								0, 1, 1,
    1.80 +								0, edge_connector_cutout_back_depth, feature_height_offset);
    1.81  						}
    1.82  
    1.83  						/* Holes for lugs. */