Rev Author Line No. Line
4828 kaklik 1  
2 pedestal_height = 13; // designed for use the MLAB standard 12mm screws.
3 x_size = 87;
4 y_size = 58;
5 mount_hole = 3.5;
6 nut_size = 6.8;
7 nut_size25 = 6.1;
8 MLAB_grid = 10.16;
9  
10 x_holes = floor(x_size / MLAB_grid);
11 y_holes = floor(y_size / MLAB_grid);
12  
13 MLAB_grid_xoffset = (x_size - (x_holes * MLAB_grid))/2;
14 MLAB_grid_yoffset = (y_size - (y_holes * MLAB_grid))/2;
15  
16 difference () {
17 cube([x_size, y_size ,pedestal_height]); // base plastics brick
18  
19 //mount holes for Raspberry Pi model A/B
20  
21 translate ([26.5, 19, 0])
22 rotate([0,0,90])
23 cylinder (h = 6, r= nut_size25/2, $fn=6);
24 translate ([26.5, 19, 6.2]) // one solid layer for slicer (the holes will be pierced on demand )
25 cylinder (h = pedestal_height, r= 3.0/2, $fn=30);
26  
27 translate ([81, 44.5, 0])
28 rotate([0,0,90])
29 cylinder (h = 6, r= nut_size25/2, $fn=6);
30 translate ([81, 44.5, 6.2]) // one solid layer for slicer (the holes will be pierced on demand )
31 cylinder (h = pedestal_height, r= 3.0/2, $fn=30);
32  
33 ////////////////////////////////////////
34  
35 // MLAB grid holes
36 grid_list = [for (j = [MLAB_grid_xoffset : MLAB_grid: 86], i = [MLAB_grid_yoffset :MLAB_grid: 55])
37 if (!(j>20 && i>10 && j<50 && i<50) && !(j>75 && i>40 && j<90 && i<50) ) // exception for Raspberry mount holes
38 [j, i] ];
39  
40 for (j = grid_list) {
41 translate (concat(j, [0]))
42 cylinder (h = 3, r= nut_size/2, $fn=6);
43 translate (concat(j, [3.2])) // one solid layer for slicer (the holes will be pierced on demand )
44 cylinder (h = pedestal_height /3, r= mount_hole/2, $fn=30);
45 translate (concat(j, [6.0]))
46 cylinder (h = 10, r= nut_size/2, $fn=6);
47 }
48  
49 /////////////////////////////////////////
50 // holes for components at the bottom side of the PCB.
51  
52 difference () {
53 translate ([2, 2 , pedestal_height - 3]) //
54 cube([83, 54, 3]);
55  
56 translate ([26.5, 19, pedestal_height - 5]) // Raspberry screw mount pile
57 cylinder (h = pedestal_height, r= 4, $fn=20);
58  
59 translate ([77, 40.5, pedestal_height - 5]) // Raspberry screw mount brick
60 cube([20,8,5]);
61 }
62 translate ([0, 14 , pedestal_height - 4]) // SD Card
63 cube([20,30.5,5]);
64  
65 //// lightening central holes
66  
67 translate ([8, 8, 0])
68 cube([14.5,y_size - 16,pedestal_height ]);
69  
70 translate ([30.5,8, 0])
71 cube([47, y_size - 16,pedestal_height ]);
72 }
73  
74