Replaced platform locking with screws

src/common.scad

@@ -0,0 +1,22 @@
+use <BOSL/shapes.scad>
+include <BOSL/constants.scad>
+
+module cubi(s, fillet=0, edges=EDGES_ALL) {
+    if ($preview) {
+        cube(s, center=true);
+    } else {
+        cuboid(s, fillet=fillet, edges=edges);
+    }
+}
+
+module screwhole(d, h, head=true) {
+    $fn=$preview ? 5 : 20;
+    translate([0, 0, h]) cylinder(d=d*1.5, h=d*0.5);
+    split=h*0.5;
+    translate([0, 0, split]) cylinder(d=d, h=(h-split));
+    cylinder(d2=d, d1=d*0.1, h=split);
+    cylinder(d2=d*0.6, d1=d*0.6, h=split/2);
+}
+
+function vec_sum(v, w) = [v.x + w.x, v.y + w.y, v.z + w.z];
+

src/harness.scad

@@ -22,13 +22,7 @@ function use_slideout_backplane() = is_model_strict(MODEL_HARNESS_BOTTOM_PIP) ||
 
 backplane_pip_slideout=10;
 
-module cubi(s, fillet=0, edges=EDGES_ALL) {
-    if ($preview) {
-        cube(s, center=true);
-    } else {
-        cuboid(s, fillet=fillet, edges=edges);
-    }
-}
+use <common.scad>
 
 module dotted_grill_cutout(vents_area, vents_x=10, vents_y=10, mesh=1.5, cut_corners=false) {
     function is_corner(x, y, xm, ym) = (x == 0 || x == xm) && (y == 0 || y == ym);
@@ -401,7 +395,7 @@ module phone_harness() {
 }
 
 module model() {
-    up(get_platform_size().z + get_harness_size().z/2) phone_harness();
+    up(get_harness_size().z/2) phone_harness();
 }
 
 if (!is_undef(validation)) {

src/main.scad

@@ -3,4 +3,4 @@ include <export.scad>
 
 include <harness.scad>
 include <platform.scad>
-//include <strap.scad>
+include <strap.scad>

src/platform.scad

@@ -1,4 +1,6 @@
 include <export.scad>
+//export=MODEL_PLATFORM_HARNESS;
+//export=MODEL_PLATFORM_STRAP;
 
 // dependency: https://github.com/revarbat/BOSL
 include <BOSL/constants.scad>
@@ -10,7 +12,9 @@ use <BOSL/sliders.scad>
 use <specs_platform.scad>
 use <specs_strap.scad>
 
+use <common.scad>
 use <strap_common.scad>
+use <platform_common.scad>
 
 // DEBUG:
 //validation = 1;
@@ -34,24 +38,73 @@ module model_prop_arm() {
 // Blocks:
 module platform(base) {
     size=get_platform_size();
+    base_size=size;
+    wall=get_platform_wall();
+    top_size=get_platform_top_size();
     top=!base;
-    up(top?size.z:0)
-    color(top?"Olive":"YellowGreen")
-    cube(size, center=true);
     
-    module strap_connectors() {
-        down(size.z/2) {
-            for (i=[0:3]) {
-                left((i%2*(-2)+1) * (size.x/2 - get_link_segment_size().y/2))
-                fwd((round(i/2)%2*(-2)+1) * size.y/2)
-                down(get_link_segment_size().z/2)
-                zrot(90 + (round(i/2)%2*180)) link_connector_pin();
+    module platform_screwholes() {
+        module screwhole_one() {
+            fwd(base_size.y/2) xrot(90) down(get_platform_screwhole_h()) screwhole(d=get_platform_screwhole_d(), h=get_platform_screwhole_h());
+        }
+        module screwhole_sided() {
+            offset=16;
+            left(offset) screwhole_one();
+            right(offset) screwhole_one();
+        }
+        up(top_size.z/5) {
+            screwhole_sided();
+            scale([1,-1,1]) screwhole_sided();
+        }
+    }
+    module base_platform_cutout_for_top() {
+        base_top_diff=[base_size.x-top_size.x, base_size.y-top_size.y];
+        guiding=1;
+        top_slack=[0.2, 0.2, 0];
+        translate(get_platform_top_pos()) {
+            cube(vec_sum(top_size, top_slack), center=true);
+            down(top_size.z/2 - 2)
+            prismoid(size1=[top_size.x,top_size.y], size2=[top_size.x+base_top_diff.x*guiding,top_size.y+base_top_diff.y*guiding], h=top_size.z);
+        }
+    }
+    module base_platform() {
+        module base_platform_core() {
+            braced_thinning_wall(h=size.y, l=size.x, thick=size.z, wall=0, strut=wall, orient=ORIENT_X_90);
+        }
+        
+        difference() {
+            base_platform_core();
+            base_platform_cutout_for_top();
+            platform_screwholes();
+        }
+    }
+    module top_platform() {
+        difference() {
+            up((base_size.z-top_size.z)/2)       
+            up(top_size.z/2) intersection() {
+                scale([1,1,4]) braced_thinning_wall(h=top_size.y, l=top_size.x, thick=top_size.z, wall=0, strut=wall/4, orient=ORIENT_X_90);
+                down(top_size.z/2) scale([2,2,1]) cube(top_size, center=true);
             }
+            platform_screwholes();
+        }
+    }
+        
+    module strap_connectors() {
+        //down(size.z/2)
+        difference() {
+            foreach_platform_strap_connector() {
+                link_connector_pin();
+            }
+            base_platform_cutout_for_top();
         }
     }
     
+    color(top?"Olive":"YellowGreen")
     if (base) {
+        base_platform();
         strap_connectors();
+    } else {
+        top_platform();
     }
 }
 
@@ -64,7 +117,18 @@ module model_platform_strap() {
     platform(base=true);
 }
 
+// Validation:
+/*intersection() {
+    model_platform_harness();
+    model_platform_strap();
+}*/
 // Export:
-if (is_model(MODEL_PLATFORM_HARNESS)) model_platform_harness();
-if (is_model(MODEL_PLATFORM_STRAP)) model_platform_strap();
-if (is_model(MODEL_DEMO)) model_prop_arm();
+difference() {
+    union() {
+        if (is_model(MODEL_PLATFORM_HARNESS)) model_platform_harness();
+        if (is_model(MODEL_PLATFORM_STRAP)) model_platform_strap();
+        //if (is_model(MODEL_DEMO)) model_prop_arm();
+    }
+    // xray:
+    //left(500+5) cube([1000, 1000, 1000], center=true);
+}

src/platform_common.scad

@@ -0,0 +1,21 @@
+// dependency: https://github.com/revarbat/BOSL
+include <BOSL/constants.scad>
+use <BOSL/transforms.scad>
+use <BOSL/shapes.scad>
+use <BOSL/masks.scad>
+use <BOSL/sliders.scad>
+
+use <specs_platform.scad>
+use <specs_strap.scad>
+
+use <strap_common.scad>
+
+module foreach_platform_strap_connector() {
+    offset=get_platform_strap_connector_offset();
+    for (i=[0:3]) {
+        translate([((i%2*(-2)+1) * offset.x), -((round(i/2)%2*(-2)+1) * offset.y), offset.z])
+        zrot(90 + (round(i/2)%2*180))
+        children();
+    }
+}
+

src/specs_platform.scad

@@ -1,8 +1,22 @@
 use <specs_phone.scad>
+use <specs_strap.scad>
 
 function get_platform_size() = [
-    get_phone_size().x - 5,
+    get_phone_size().x - 30,
     get_phone_size().y - 5,
-    5
+    get_platform_wall()*3
     ];
+function get_platform_top_size() = [
+    get_platform_size().x - 2*get_platform_wall(),
+    get_platform_size().y - 2*get_platform_wall(),
+    get_platform_size().z - get_platform_wall()];
+function get_platform_top_pos() = [0, 0, (get_platform_size().z-get_platform_top_size().z)/2];
+function get_platform_wall() = 3;
+function get_platform_strap_connector_offset() = [
+    (get_platform_size().x/2 - get_link_segment_size().y/2) - 3,
+    get_platform_size().y/2 + 4,
+    -get_link_segment_size().z/2 + 0.5
+    ];
+function get_platform_screwhole_d() = 3.2;
+function get_platform_screwhole_h() = 10;
 

src/strap.scad

@@ -1,12 +1,25 @@
-links_count=3; // [1..20]
+links_count=2; // [1..20]
 include_terminal=true; // [true,false]
+include_screwhole=true; // [true,false]
+clip_screwhole=2;
 
 include <export.scad>
+//export=MODEL_LINKS;
+//export=MODEL_CLIP_A;
+//export=MODEL_CLIP_B;
+//export=MODEL_CLIP_RATCHETING_A;
+//export=MODEL_CLIP_RATCHETING_B;
+
 use <BOSL/transforms.scad>
 use <BOSL/shapes.scad>
 include <BOSL/constants.scad>
 
+use <specs_strap.scad>
+use <specs_platform.scad>
+
+use <common.scad>
 use <strap_common.scad>
+use <platform_common.scad>
 
 if (is_model_strict(MODEL_LINKS)) {
     echo("===============================");
@@ -79,7 +92,13 @@ module clip() {
         slack=groove?0.2:0;
         joiner_size=[entry_size.x-6+slack, entry_size.y-6+slack, entry_size.z-3+slack];
         joiner_pos=[entry_pos.x, entry_pos.y, entry_pos.z - entry_size.z/2 + joiner_size.z/2];
-        translate(joiner_pos) cube(joiner_size, center=true);
+        difference() {
+            translate(joiner_pos) cube(joiner_size, center=true);
+            screw_cutout();
+        }
+    }
+    module screw_cutout() {
+        if (include_screwhole) down(clip_size.z/2) screwhole(d=clip_screwhole, h=clip_size.z);
     }
     
     module model() {
@@ -91,6 +110,7 @@ module clip() {
             }
             right(clip_size.x/2) socket_cutout();
             left(clip_size.x/2) socket_cutout();
+            screw_cutout();
         }
     }
     
@@ -249,11 +269,13 @@ module clip_ratcheting(ratchet_length=28) {
 
 // === Export ===
 if (is_model(MODEL_DEMO)) {
-    translate([-20, -40, -10]) zrot(-90) {
-        link_chain(links_count, include_terminal=include_terminal);
-        right(links_count * get_link_segment_size().x + get_link_clip_size().x) {
-            clip();
-            right(get_link_clip_size().x) clip_ratcheting();
+    foreach_platform_strap_connector() {
+        zrot(180) down(get_link_segment_size().z/2) {
+            link_chain(links_count, include_terminal=include_terminal);
+            /*right(links_count * get_link_segment_size().x + get_link_clip_size().x) {
+                clip();
+                right(get_link_clip_size().x) clip_ratcheting();
+            }*/
         }
     }
 } else {

src/strap_common.scad

@@ -6,6 +6,8 @@ include <BOSL/constants.scad>
 
 use <specs_strap.scad>
 
+use <common.scad>
+
 module pin() {
     segment_size=get_link_segment_size();
     h=segment_size.y;
@@ -33,7 +35,7 @@ module pin_socket() {
 module arm() {
     segment_size=get_link_segment_size();
     arm_size=get_link_joiner_arm_size();
-    fwd(segment_size.y/2 + arm_size.y/2 - 1) right(arm_size.x/2 - 1) cuboid(arm_size, fillet=1, edges=EDGES_FRONT + EDGES_Y_ALL);
+    fwd(segment_size.y/2 + arm_size.y/2 - 1) right(arm_size.x/2 - 1) cubi(arm_size, fillet=1, edges=EDGES_FRONT + EDGES_Y_ALL);
 }
 module armFront() {
     arm();
@@ -46,9 +48,10 @@ module armJoiner() {
     arm_size=get_link_joiner_arm_size();
     segment_size=get_link_segment_size();
     joiner_size=[arm_size.x-get_link_socket_size().x, segment_size.y, segment_size.z];
-    right(joiner_size.x/2 + get_link_socket_size().x/2 + gap) cuboid(joiner_size, fillet=1, edges=EDGES_Z_ALL + EDGES_BOTTOM);
+    right(joiner_size.x/2 + get_link_socket_size().x/2 + gap) cubi(joiner_size, fillet=1, edges=EDGES_Z_ALL + EDGES_BOTTOM);
 }
 module link_arms() {
+    $fn=$preview?4:20;
     armFront();
     armBack();
     armJoiner();