added scad

extra/construction.scad

+include<../tile.scad>;
+
+t = 2;
+
+$fn = 64;
+// for (i = [ -1, 0, 1 ]) translate([ i * Ta(T24), 0, 0 ]) tile(T24, 4);
+
+module bracket_base() difference() {
+  union() {
+    for (rot = [ [ 0, 90, 0 ], [ 180, 0, 0 ] ])
+      rotate(rot) translate([ Ta(T24) / 2, 0, 0 ]) tile_raw_plate(T24, 1, 1, 4);
+  }
+
+  for (rot = [ [ 0, 90, 0 ], [ 180, 0, 0 ] ])
+    rotate(rot) translate([ Ta(T24) / 2, 0, 0 ]) {
+      tile_center_hole(T24, h = 100, center = true);
+      tile_screw_pos(T24){
+	  cylinder(d = Tscrew_d(T24), h = 100, center = true);
+		translate([0,0,t])
+		cylinder(d= Tnut_d(T24), h=Ta(T24)/2 - t, $fn=6);
+		}
+    }
+}
+
+module bracket_support(i) {
+  hull() intersection() {
+    bracket_base();
+    translate([ 0, i * Ta(T24), 0 ]) cube([ 100, t, 100 ], center = true);
+  }
+}
+
+module bracket() {
+  bracket_base();
+  for (i = [ -0.5, 0.5 ]) difference() {
+      bracket_support(i);
+      scale([ 0.7, 1, 0.7 ]) bracket_support(i);
+    }
+}
+
+bracket();

extra/realsense.scad

+include <../tile.scad>;
+
+
+screw_d = 3;
+screw_a = 45;
+
+t = 5;
+
+$fn = 64;
+
+module screw_holes(){
+    for(i=[-1,1]) translate([i*screw_a/2, 0, 0]) cylinder(d=screw_d,h=10,center=true);
+}
+
+difference(){hull(){
+for(i=[1,-1])
+{
+    translate([i*screw_a/2,0,0])
+    cylinder(d=screw_d+t*2,h=t);
+}
+
+translate([0,0,t/2])
+cube([Ta(T24), Ta(T24), t], center=true);
+}
+screw_holes();
+translate([0,0,t/2])
+tile_neg(T24, t, center=true);
+}

extra/rpi.scad

+include<../tile.scad>;
+
+screw_d = 2;
+
+screw_coord_a = 58;
+screw_coord_b = 49;
+screw_coord_offset = -85 / 2 + 3.5 + 58 / 2;
+
+dim = [ 85, 56, 22 ];
+z_off = 4;
+bot_col_h = 2;
+col_d = 5;
+
+pcb_t = 2;
+col_h = 15;
+h = 36;
+top_col_h = h - col_h - pcb_t - bot_col_h - z_off;
+
+t = 2;
+
+module cutout_plate(dim, corner, center = false) hull() {
+  cube(dim - [ 2 * corner, 0, 0 ], center);
+  cube(dim - [ 0, 2 * corner, 0 ], center);
+}
+
+module rpi_screw_pos() {
+  for (i = [ 0.5, -0.5 ], j = [ 0.5, -0.5 ])
+    translate([ i * screw_coord_a + screw_coord_offset, j * screw_coord_b, 0 ])
+	children();
+}
+
+module baseplate() {
+  translate([ 0, 0, z_off / 2 ]) cutout_plate(
+      [ Ta(T24) * 4, Ta(T24) * 3, z_off ], corner = 4, center = true);
+}
+
+module M3_hole(l) {
+  cylinder(d = 3, h = l);
+  cylinder(d = 6, h = 2);
+}
+
+module bot_rpi_holder() difference() {
+  union() {
+    baseplate();
+    rpi_screw_pos() cylinder(d = col_d, h = z_off + bot_col_h);
+  }
+  rpi_screw_pos() M3_hole(20);
+  for (i = [ -1.5, -0.5, 0.5, 1.5 ], j = [ -1, 0, 1 ])
+    translate([ i * Ta(T24), j * Ta(T24), 0 ]) tile_screw_pos(T24){
+	cylinder(d = screw_d, h = 100, center = true);
+      translate([ 0, 0, z_off - 2 ]) cylinder(d = 6, h = 3);
+	}
+}
+
+module top_rpi_holder() difference() {
+  union() {
+    translate([ 0, 0, h ]) rotate([ 180, 0, 0 ]) difference() {
+      baseplate();
+      cutout_plate([ Ta(T24) * 3, Ta(T24) * 2, 100 ], corner = 4,
+		   center = true);
+    }
+    rpi_screw_pos() translate([ 0, 0, h ]) rotate([ 180, 0, 0 ])
+	cylinder(d = col_d, h = top_col_h);
+  }
+  rpi_screw_pos() translate([ 0, 0, h ]) rotate([ 180, 0, 0 ]) M3_hole(20);
+  for (i = [ -1.5, -0.5, 0.5, 1.5 ], j = [ -1, 0, 1 ])
+    translate([ i * Ta(T24), j * Ta(T24), h - z_off/2 ]) tile_screw_pos(T24) {
+		tile_screw_hole(T24, h=z_off, centered_hole=true);
+    }
+}
+
+$fn = 128;
+
+bot_rpi_holder();
+top_rpi_holder();