rs485-case/case.scad

   1 wall_thickness = 1.5;
   2
   3 pcb_length = 54;
   4 pcb_width = 18.5;
   5 pcb_thickness = 1;
   6 pcb_depth = 3;
   7 pcb_rail_width = 1;
   8
   9 box_height = 12;
  10 box_depth = pcb_thickness + pcb_depth;
  11
  12 lid_rail_width = 1;
  13 lid_rail_height = 1.5;
  14
  15 usb_width = 12.2;
  16 usb_height = 11;
  17
  18 rs485_width = 16.5;
  19 rs485_height = 8;
  20
  21 text_depth = 0.2;
  22
  23 over = 0.1;
  24 clearance = 0.3;
  25
  26 module bottom() {
  27         difference() {
  28                 // Exterior
  29                 translate([-wall_thickness, -wall_thickness, -box_depth-wall_thickness])
  30                         cube([2*wall_thickness + pcb_length, 2*wall_thickness + pcb_width, wall_thickness + box_depth + box_height]);
  31
  32                 // Interior
  33                 cube([pcb_length, pcb_width, box_height+1]);
  34
  35                 // USB connector hole
  36                 translate([pcb_length-over, (pcb_width-usb_width)/2, 0])
  37                         cube([wall_thickness+2*over, usb_width, box_height+over]);
  38
  39                 // RS485 connector hole
  40                 translate([-wall_thickness-over, (pcb_width-rs485_width)/2, 0])
  41                         cube([wall_thickness+2*over, rs485_width, box_height+over]);
  42
  43                 // PCB
  44                 translate([0, 0, -pcb_thickness])
  45                         cube([pcb_length, pcb_width, pcb_thickness+over]);
  46
  47                 // Sub-PCB holes
  48                 translate([pcb_length - 10, pcb_rail_width, -pcb_thickness-pcb_depth])
  49                         cube([10, pcb_width - 2*pcb_rail_width, pcb_thickness + pcb_depth + over]);
  50                 translate([pcb_length - 33, pcb_rail_width, -pcb_thickness-pcb_depth])
  51                         cube([9, pcb_width - 2*pcb_rail_width, pcb_thickness + pcb_depth + over]);
  52                 translate([1, pcb_rail_width, -pcb_thickness-pcb_depth])
  53                         cube([8, pcb_width - 2*pcb_rail_width, pcb_thickness + pcb_depth + over]);
  54         }
  55 }
  56
  57 module top() {
  58         difference() {
  59                 union() {
  60                         // Lid
  61                         translate([-wall_thickness, -wall_thickness, 0])
  62                                 cube([pcb_length + 2*wall_thickness, pcb_width + 2*wall_thickness, wall_thickness]);
  63
  64                         // Rails
  65                         translate([0, 0, -lid_rail_height])
  66                                 cube([pcb_length, lid_rail_width, lid_rail_height + over]);
  67                         translate([0, pcb_width - lid_rail_width, -lid_rail_height])
  68                                 cube([pcb_length, lid_rail_width, lid_rail_height + over]);
  69
  70                         // USB connector roof
  71                         translate([pcb_length, (pcb_width - usb_width)/2 + clearance, usb_height - box_height + clearance])
  72                                 cube([wall_thickness, usb_width - 2*clearance, box_height - usb_height - clearance + over]);
  73
  74                         // RS485 connector roof
  75                         translate([-wall_thickness, (pcb_width - rs485_width)/2 + clearance, rs485_height - box_height + clearance])
  76                                 cube([wall_thickness, rs485_width - 2*clearance, box_height - rs485_height - clearance + over]);
  77                 }
  78
  79                 // LED holes
  80                 translate([32, 1, -over])
  81                         cube([4, 2, wall_thickness + 2*over]);
  82                 translate([32, pcb_width - 3, -over])
  83                         cube([4, 2, wall_thickness + 2*over]);
  84
  85                 // USB label
  86                 translate([pcb_length-3, pcb_width/2, wall_thickness - text_depth])
  87                 rotate(90)
  88                 scale([0.4, 0.4, 1])
  89                         linear_extrude(text_depth + over)
  90                         text("USB", font = "Liberation Serif", halign="center");
  91
  92                 // RS485 label
  93                 translate([3, pcb_width/2, wall_thickness - text_depth])
  94                 rotate(-90)
  95                 scale([0.4, 0.4, 1])
  96                         linear_extrude(text_depth + over)
  97                         text("RS 485", font = "Liberation Serif", halign="center");
  98         }
  99 }
 100
 101 bottom();
 102 color([1, 0, 0]) translate([0, 0, box_height]) top();