1include <BOSL/constants.scad>
2include <asanoha.scad>
3use <BOSL/masks.scad>
4
5// Start config
6// Pi Board
7pi_board_size = [51,21]; //mm
8pi_board_screw_holes_center_from_board_edge_distance = [3.7/2/*3.7 is the difference between screen and pi pcb height 21-24.7 */+4.8,2]; //mm
9pi_board_screw_holes_diameter = 2.1; //mm
10pi_board_padding = 1; //mm
11
12// Screen
13screen_pcb_size = [24.7,27,13.3]; //mm (+- 0.2) 13.3mm are pin headers.
14screen_pcb_screw_holes_center_from_board_edge_distance = 2.1; //mm
15screen_pcb_screw_holes_diameter=2.8; //mm
16screen_pcb_screw_holes_spacing=[20.5,23]; //mm
17active_screen_area = [24.7,16.9,3.5]; //mm (old: 13.86)
18active_screen_area_offset_from_corner = [0,5.08]; //mm
19
20// MEMS Package (HCLGA)
21mems_microphone_package_size = [3,4,1.06]; //mm https://cdn-learn.adafruit.com/assets/assets/000/049/977/original/MP34DT01-M.pdf
22mems_microphone_position_offset_from_corner = [11.5,pi_board_padding+screen_pcb_size.x/2-mems_microphone_package_size.y/2,0]; //mm
23mems_border_size = 0.6; // mm
24
25// Asanoha pattern
26asanoha_pattern_size = [40.7,20.35,1]; //mm
27asanoha_pattern_offset_from_corner = [(pi_board_padding+pi_board_screw_holes_diameter)*2,pi_board_padding+screen_pcb_size.x/2-asanoha_pattern_size.y/2,mems_microphone_position_offset_from_corner.z]; //mm
28
29
30// Screws
31m2_screw_nut_size = [5,5,1.6];
32
33// Misc
34walls_thickness = 2; //mm
35rounding_radius=1.5; //mm
36
37resolution = 80;
38// End config
39
40// Modules
41module sector(radius, angles, fn = resolution) {
42 r = radius / cos(180 / fn);
43 step = -360 / fn;
44
45 points = concat([[0, 0]],
46 [for(a = [angles[0] : step : angles[1] - 360])
47 [r * cos(a), r * sin(a)]
48 ],
49 [[r * cos(angles[1]), r * sin(angles[1])]]
50 );
51
52 difference() {
53 circle(radius, $fn = fn);
54 polygon(points);
55 }
56}
57
58module arc(radius, angles, width = 1, fn = resolution) {
59 difference() {
60 sector(radius + width, angles, fn);
61 sector(radius, angles, fn);
62 }
63}
64
65// Modeling
66difference(){
67// Body
68cube(size=[pi_board_size.x+2*pi_board_padding,screen_pcb_size.x+2*pi_board_padding,walls_thickness]);
69 // Fillet Edge
70 fillet_mask_z(l=walls_thickness, r=rounding_radius, align=V_UP, $fn=resolution);
71
72 translate([pi_board_size.x+2*pi_board_padding,screen_pcb_size.x+2*pi_board_padding,0])
73 fillet_mask_z(l=walls_thickness, r=rounding_radius, align=V_UP, $fn=resolution);
74
75 translate([pi_board_size.x+2*pi_board_padding,0,0]) fillet_mask_z(l=walls_thickness, r=rounding_radius, align=V_UP, $fn=resolution);
76
77 translate([0,screen_pcb_size.x+2*pi_board_padding,0]) fillet_mask_z(l=walls_thickness, r=rounding_radius, align=V_UP, $fn=resolution);
78 // MEMS Package (HCLGA)
79 translate(mems_microphone_position_offset_from_corner) cube(size=[mems_microphone_package_size.x,mems_microphone_package_size.y,walls_thickness]);
80 // Screws + Nuts
81 translate([pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,0]) cylinder(walls_thickness,pi_board_screw_holes_diameter/2,pi_board_screw_holes_diameter/2,$fn=resolution);
82
83 translate([pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,walls_thickness-m2_screw_nut_size.z]) cylinder(m2_screw_nut_size.z,m2_screw_nut_size.x/2,m2_screw_nut_size.x/2,$fn=6);
84
85 translate([pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,screen_pcb_size.x-pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,0]) cylinder(walls_thickness,pi_board_screw_holes_diameter/2,pi_board_screw_holes_diameter/2,$fn=resolution);
86
87 translate([pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,screen_pcb_size.x-pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,walls_thickness-m2_screw_nut_size.z]) cylinder(m2_screw_nut_size.z,m2_screw_nut_size.x/2,m2_screw_nut_size.x/2,$fn=6);
88
89 translate([pi_board_size.x-pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,0]) cylinder(walls_thickness,pi_board_screw_holes_diameter/2,pi_board_screw_holes_diameter/2,$fn=resolution);
90
91 translate([pi_board_size.x-pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,walls_thickness-m2_screw_nut_size.z]) cylinder(m2_screw_nut_size.z,m2_screw_nut_size.x/2,m2_screw_nut_size.x/2,$fn=6);
92
93 translate([pi_board_size.x-pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,screen_pcb_size.x-pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,0]) cylinder(walls_thickness,pi_board_screw_holes_diameter/2,pi_board_screw_holes_diameter/2,$fn=resolution);
94
95 translate([pi_board_size.x-pi_board_screw_holes_center_from_board_edge_distance.y+pi_board_padding,screen_pcb_size.x-pi_board_screw_holes_center_from_board_edge_distance.x+pi_board_padding,walls_thickness-m2_screw_nut_size.z]) cylinder(m2_screw_nut_size.z,m2_screw_nut_size.x/2,m2_screw_nut_size.x/2,$fn=6);
96
97 translate(asanoha_pattern_offset_from_corner) cube(size=[asanoha_pattern_size.x,asanoha_pattern_size.y,walls_thickness]);
98
99}
100
101difference(){
102 union(){
103 // MEMS Package (HCLGA)
104 translate(asanoha_pattern_offset_from_corner) drawAsanoha();
105 translate([mems_microphone_position_offset_from_corner.x-
106mems_border_size,mems_microphone_position_offset_from_corner.y-
107mems_border_size,mems_microphone_position_offset_from_corner.z]) cube(size=[mems_microphone_package_size.x+mems_border_size*2,mems_microphone_package_size.y+mems_border_size*2,walls_thickness]);
108 }
109 // MEMS Package (HCLGA)
110 translate(mems_microphone_position_offset_from_corner) cube(size=[mems_microphone_package_size.x,mems_microphone_package_size.y,walls_thickness]);
111
112
113}