Refactor to make SCAD files more modular

3d/28byj-48.scad

@@ -16,6 +16,9 @@
 
 28byj48_chassis_radius = 28/2;
 28byj48_chassis_height = 19;
+// Clearance between the motor chassis and the outside right wall of the previous module
+28byj48_chassis_height_clearance = 1.4;
+
 28byj48_shaft_offset = 8;
 28byj48_mount_outer_radius = 3.5;
 28byj48_mount_hole_radius = 4.2/2;

3d/common.scad

@@ -0,0 +1,29 @@
+// MDF, .120in nominal
+// https://www.ponoko.com/materials/mdf-fiberboard
+thickness = 3.0;
+
+etch_depth = 0.1;  // for render
+eps=.01;
+num_flaps = 40;
+
+// Rendering Colors
+assembly_color = [0.76, 0.60, 0.42];  // MDF, "c1996b"
+etch_color = [0, 0, 0];  // black, "000000"
+
+
+assembly_color1 = color_multiply(assembly_color, [1.161, 1.157, 1.157, 1.0]);  // "e1b17c" with MDF
+assembly_color2 = color_multiply(assembly_color, [0.897, 0.895, 0.895, 1.0]);  // "ae8960" with MDF
+assembly_color3 = color_multiply(assembly_color, [0.547, 0.542, 0.540, 1.0]);  // "6a533a" with MDF
+assembly_color4 = color_multiply(assembly_color, [0.268, 0.268, 0.271, 1.0]);  // "34291d" with MDF
+
+// multiply two equal matricies by each element, limiting to a max of 1.0
+function color_multiply(x, y) =
+    [ for(j=[0:len(x) - 1]) min(x[j] * y[j], 1.0) ];
+
+
+module enclosure_etch_style() {
+    color(etch_color)
+        translate([0, 0, thickness])
+            linear_extrude(height=etch_depth)
+                children();
+}

3d/flap_fonts.scad

@@ -15,7 +15,6 @@
 */
 
 use<roboto/RobotoCondensed-Regular.ttf>;
-include<flap_dimensions.scad>;
 
 letter_font = "RobotoCondensed";
 letter_height = 0.75;  // aspect, 0-1

3d/font_generator.scad

@@ -14,7 +14,7 @@
    limitations under the License.
 */
 
-include<flap_dimensions.scad>;
+include<parts/flap.scad>;
 use<projection_renderer.scad>;
 use<splitflap.scad>;
 

3d/m4_dimensions.scad

@@ -14,14 +14,4 @@
    limitations under the License.
 */
 
-// M4 bolts
-m4_hole_diameter = 4.5;
-m4_bolt_length = 12;
-m4_button_head_diameter = 7.6 + .2;
-m4_button_head_length = 2.2 + .2;
-m4_nut_width_flats = 7 + .2;
-m4_nut_width_corners = 7/cos(180/6);
-m4_nut_width_corners_padded = m4_nut_width_corners + .2;
-m4_nut_length = 3.2;
-m4_nut_length_padded = m4_nut_length + .2;
 

3d/parts/connector.scad

@@ -0,0 +1,57 @@
+/*
+   Copyright 2015-2020 Scott Bezek and the splitflap contributors
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+include<enclosure.scad>;
+include<hardware.scad>;
+include<../common.scad>;
+
+connector_bracket_length_outer = 14;
+connector_bracket_length_inner = side_tab_width * 2 - m4_button_head_diameter/2;
+connector_bracket_thickness = captive_nut_inset - thickness - 0.2;
+connector_bracket_width = enclosure_width - enclosure_wall_to_wall_width + thickness*2 + connector_bracket_thickness*2;
+connector_bracket_overlap = 4;
+connector_bracket_clearance = 0.40;
+connector_bracket_depth_clearance = 0.20;
+
+
+module connector_bracket_2d() {
+    difference() {
+        square([connector_bracket_width, connector_bracket_length_outer]);
+        translate([connector_bracket_thickness, -eps]) {
+            square([connector_bracket_width - connector_bracket_thickness*2, connector_bracket_length_outer - connector_bracket_length_inner + eps]);
+        }
+        translate([connector_bracket_thickness - connector_bracket_clearance/2, -eps]) {
+            square([thickness + connector_bracket_clearance, connector_bracket_length_outer - connector_bracket_overlap + connector_bracket_depth_clearance + eps]);
+        }
+        translate([connector_bracket_width - connector_bracket_thickness - thickness - connector_bracket_clearance/2, -eps]) {
+            square([thickness + connector_bracket_clearance, connector_bracket_length_outer - connector_bracket_overlap + connector_bracket_depth_clearance + eps]);
+        }
+    }
+}
+
+module connector_bracket() {
+    linear_extrude(height=thickness) {
+        connector_bracket_2d();
+    }
+}
+
+module connector_bracket_side_holes() {
+    // overlap slot
+    translate([enclosure_vertical_inset - thickness - connector_bracket_clearance/2, -connector_bracket_overlap]) {
+        square([thickness + connector_bracket_clearance, connector_bracket_overlap + eps]);
+    }
+}
+