mic-camera-adapter.scad

   1 // -*- C -*-
   2
   3 // print on High Detail
   4 // but adjust infill to 50%
   5
   6 include <threads.scad>
   7 include <camera-mount.scad>
   8
   9 positive_dia = inch * 3/8. - 0.375;
  10 positive_l = inch * 1/2.;
  11
  12 negative_wall = 4;
  13 midsection = 4;
  14
  15 spanner = 12;
  16
  17 base_dia = 35;
  18 base_th_min = 1;
  19 base_th_max = 4;
  20
  21 //$test = true;
  22 $test = false;
  23 $fs=0.1;
  24 $fa=5;
  25
  26 module Adapter(){
  27   translate([0,0,-0.1])
  28     english_thread(diameter=positive_dia/inch, threads_per_inch=16,
  29                    leadin=1, test=$test,
  30                    length= (positive_l + 0.1) / inch);
  31   rotate([180,0,0]) {
  32     difference(){
  33       union(){
  34         cylinder(r= spanner/2 * 1/(0.5 * sqrt(3)),
  35                  h = negative_l + midsection,
  36                  $fn=6);
  37         translate([0,0, midsection+negative_l]) {
  38           mirror([0,0,1]) {
  39             hull(){
  40               cylinder(r= base_dia/2, h = base_th_min);
  41               cylinder(r= 0.1,        h = base_th_max);
  42             }
  43           }
  44         }
  45       }
  46       translate([0,0, midsection]) {
  47         english_thread(diameter=negative_dia/inch,
  48                        threads_per_inch=negative_tpi,
  49                        leadin=0, internal=true, test=$test,
  50                        length= (negative_l + inch/19) / inch);
  51         translate([0,0, negative_l]) {
  52           hull(){
  53             translate([0,0, negative_chamfer])
  54               cylinder(r= negative_dia/2 + negative_chamfer*2,
  55                        h=1);
  56             mirror([0,0,1])
  57               cylinder(r= negative_dia/2 - negative_chamfer*2,
  58                        h= negative_chamfer*3);
  59           }
  60         }
  61       }
  62     }
  63   }
  64 }
  65
  66 Adapter();