fairphone-battery-case.scad

   1 // -*- C -*-
   2
   3 mainwall_th = 3.0;
   4 smallwall_th = 2.0;
   5
   6 seal_th = 0.3 + 0.6 + 0.6; // total gap for seal etc.
   7 behind_recess = 1.5;
   8
   9 recess_gap_end = 0.4;
  10
  11 lid_edge_th = 0.5;
  12
  13 battery_len = 66.55 + 1.25 -.55;
  14 battery_th = 6.55 + 0.75 - .60;
  15 battery_wdth = 44.38 + 0.75 -.55;
  16
  17 battery_base_indent = 0.94 + 0.50;
  18 battery_base_indent_fromside_outside = 4;
  19 battery_base_indent_fromside_inside = 10;
  20
  21 // for testing:
  22 //battery_len = 3;
  23 //battery_wdth = 15;
  24 //battery_base_indent_fromside_inside = 6;
  25
  26 // calculated
  27
  28 bpp0 = [0,0];
  29 bpp1 = bpp0 + [ 0, mainwall_th - behind_recess ];
  30 lppA = bpp1 + [ seal_th, -recess_gap_end ];
  31 lppB = lppA + [ lid_edge_th, 0 ];
  32 bpp2 = [ lppB[0], bpp1[1] ];
  33 bpp3 = [ bpp2[0] + (bpp1 - bpp0)[1], bpp0[1] ];
  34 bpp4 = [ bpp3[0], bpp0[1] + mainwall_th ];
  35 lppC = bpp3 + [ 0, -recess_gap_end ];
  36
  37 s0 = battery_wdth/2;
  38 s0i = s0 - battery_th/2;
  39 s1 = s0 + smallwall_th;
  40
  41 echo(
  42      bpp0,
  43      bpp1,
  44      bpp2,
  45      bpp3,
  46      bpp4,
  47      bpp5,
  48      bpp6,
  49      bpp7,
  50      bpp8
  51 );
  52
  53 echo(
  54      lppA,
  55      lppB,
  56      lppC,
  57      lppD,
  58      lppE
  59 );
  60
  61 bpp8 = bpp0 + [ -battery_len,0 ];
  62 bpp5 = [ bpp8[0] - smallwall_th, bpp4[1] ];
  63 bpp9 = [ bpp0[0], bpp0[1] - battery_th/2 - 1.0 ];
  64 bpp7 = [ bpp8[0], bpp9[1] ];
  65 bpp6 = [ bpp5[0], bpp9[1] ];
  66 lppE = [ lppA[0], bpp9[1] ];
  67 lppD = [ lppC[0], bpp9[1] ];
  68
  69 module BaseHalfPlan(indent=0){
  70   polygon([ bpp0,
  71             bpp1,
  72             bpp2,
  73             bpp3,
  74             bpp4,
  75             bpp5,
  76             bpp6,
  77             bpp7 + indent * [1,0],
  78             bpp8 + indent * [1,0]
  79             ]);
  80 }
  81
  82 module SideHalfPlan(){
  83   polygon([ bpp5,
  84             bpp6,
  85             bpp9,
  86             bpp1
  87             ]);
  88 }
  89
  90 module LidHalfPlan(){
  91   polygon([ lppA,
  92             lppE,
  93             lppD,
  94             lppC,
  95             lppB
  96             ]);
  97 }
  98
  99 module ExtrudePlan(from,to){
 100   rotate([0,-90,0])
 101   for (mj=[0,1]) {
 102     mirror([0,0,mj]) translate([0,0,from]){
 103       linear_extrude(height= to-from){
 104         for (mi=[0,1]) {
 105           mirror([0,mi])
 106             translate([0, battery_th/2])
 107             children(0);
 108         }
 109       }
 110     }
 111   }
 112 }
 113
 114 module PlanDemo(){ ////toplevel
 115   color("blue") BaseHalfPlan();
 116   color("red") LidHalfPlan();
 117   translate([0,0,-1]) color("lightblue") SideHalfPlan();
 118 }
 119
 120 module Base(){ ////toplevel
 121   ExtrudePlan(0,s1) BaseHalfPlan();
 122   difference(){
 123     union(){
 124       ExtrudePlan(s0i, s1) SideHalfPlan();
 125       ExtrudePlan(s0 - battery_base_indent_fromside_inside,
 126                   s0 - battery_base_indent_fromside_outside
 127                   ) BaseHalfPlan(indent = battery_base_indent);
 128     }
 129     for (m=[0,1])
 130       mirror([m,0,0])
 131         translate([s0i, 0, bpp7[0] - 0.1])
 132         cylinder(r= battery_th/2, h=100, $fs=0.5);
 133   }
 134 }
 135
 136 module BaseHalfTest(){ ////toplevel
 137   intersection(){
 138     Base();
 139     translate([-100,0,-100])
 140       cube([200,200,200]);
 141   }
 142 }
 143
 144 module Lid(){ ////toplevel
 145   ExtrudePlan(0,s1) LidHalfPlan();
 146 }
 147
 148 module Demo(){ ////toplevel
 149   %Base();
 150   Lid();
 151 }
 152
 153 //PlanDemo();
 154 //Demo();
 155 //Base();