rpi-mount.scad

   1 // -*- C -*-
   2
   3 pi_board_gap = 0.5;
   4
   5 pi_sz   = [ 66.0, 30.5 ] + pi_board_gap * [1,1];
   6
   7 pi_nom_sz = [ 65, 30 ];
   8 pi_nom_centres_in = 3.5;
   9 pi_solder_side_gap = 1.5 * 2;
  10 pi_screw_hole_dia  = 2.3;
  11 pi_screw_hole_wall = 2.3;
  12
  13 pi_adj_x_offset = 1.35 - .35;
  14
  15 module PiMount(){ ////toplevel
  16   sxy = pi_nom_sz/2 - [1,1] * pi_nom_centres_in;
  17   translate([pi_adj_x_offset, 0,0])
  18   for (mx=[0,1]) mirror([mx,0,0]) for (my=[0,1]) mirror([0,my,0]) {
  19     difference(){
  20       union(){
  21         linextr(-0.1, pi_mount_z + board_support_z, convexity=1)
  22           rectfromto( pi_nom_sz/2 - 2 * [1,1] * pi_nom_centres_in,
  23                       pi_sz/2 + [1,1] * board_support_wall);
  24         linextr(-0.1, pi_mount_z - pi_solder_side_gap, convexity=1)
  25           translate(sxy)
  26           square(center=true, pi_screw_hole_dia + pi_screw_hole_wall*2);
  27       }
  28       linextr(pi_mount_z, pi_mount_z + 5, convexity=1)
  29         rectfromto(-[10,10], pi_sz/2);
  30       translate( sxy )
  31         linextr(-1, pi_mount_z + 10, convexity=1)
  32         circle(r= pi_screw_hole_dia/2);
  33     }
  34   }
  35 }