anke-gps-bracket.scad

   1 // -*- C -*-
   2
   3 // Dimensions of the main GPS body
   4 outerw = 120 + 2.5;
   5 outerh =  75 - 0.2;
   6 outert =  15 - 1.0;
   7 outerbackbevel = 3;
   8
   9 // Dimensions of the bezel area round the edges
  10 bezelw =    11 - 0.5;
  11 bezelboth = 11 - 0.5;
  12 bezeltoph =  7 - 0.5;
  13
  14 // Dimensions of the speaker at the back
  15 spkrdia =  22;
  16 spkr2bot = 19;
  17 spkr2rhs = 25;
  18
  19 // Dimensions of the plug and wire
  20 plugw =      12;
  21 plugh =       9;
  22 plug2bot =   11;
  23 plug2lhs =   11;
  24 plugtotald = 15;
  25 pluggapd =    5;
  26
  27 // Dimensions of the hole in the tray
  28 //   width and height (vertical) at the top
  29 nestleh = 53;
  30 nestlew = 55.4 - 0.5;
  31 //   depths (back to front distance):
  32 nestledl = 38.8 - 0.5;
  33 nestledr = 42.7 - 0.5;
  34 //   differences in width, depth, at bottom:
  35 nestledwl = 3.0;
  36 nestledwr = 2.4;
  37 nestleddf = 4.0;
  38 nestleddbl = 3.3;
  39 nestleddbr = 3.6;
  40
  41 nestlewallmin = 5;
  42
  43 // Amount of wire protrusion to allow for
  44 plugwiremoreh = 25;
  45
  46 // Slops and steps etc.
  47 plugslop = 0.5;
  48 plughstep = 1.5;
  49 bodylhsrhsslop = 0.5;
  50
  51 // Dimensions for strength only
  52 screent = 1.0;
  53 plugstrutw = 4;
  54 plugstrutt = min(outert, 5);
  55
  56 module GpsPlugPlug(slop){
  57   effhslop = slop - plughstep;
  58   effplugw = plugw + slop*2;
  59   effplugh = plugh + effhslop*2;
  60   translate([plug2lhs-slop, plug2bot-effhslop, -1])
  61     cube([effplugw, effplugh, outert+2]);
  62 }
  63
  64 module GpsBodyOuterBevel(len){
  65   translate([0,-1,0]) {
  66     rotate([-90,0,0]) {
  67       linear_extrude(height=len+2) {
  68         polygon([[-outerbackbevel, 0],
  69                  [ 0, outerbackbevel],
  70                  [outerbackbevel, 0],
  71                  [ 0, -outerbackbevel]]);
  72       }
  73     }
  74   }
  75 }
  76
  77 module GpsBody() { ////toplevel
  78   difference(){
  79     union(){
  80       difference(){
  81         cube([outerw, outerh, outert]);
  82         translate([bezelw, bezelboth, screent])
  83           cube([outerw-bezelw*2, outerh-bezelboth-bezeltoph, outert]);
  84         translate([outerw-spkr2rhs, spkr2bot, -1])
  85           cylinder(r=spkrdia/2, h=outert+2);
  86       }
  87       translate([plug2lhs+plugw/2, plug2bot+plugh/2, 0])
  88         cylinder(r=(plugw+plugh)/2, h=outert);
  89       for (x=[plug2lhs-plugstrutw, plug2lhs+plugw])
  90         translate([x, 0.1, 0])
  91           cube([plugstrutw, outerh-0.2, plugstrutt-0.10]);
  92     }
  93     GpsPlugPlug(0);
  94     for (x=[0,outerw]) translate([x,0,0]) GpsBodyOuterBevel(outerh);
  95     for (y=[0,outerh]) translate([0,y,0])
  96       rotate([0,0,-90]) GpsBodyOuterBevel(outerw);
  97   }
  98 }
  99
 100 module GpsPlug() {
 101   plugwireh = plug2bot + plugwiremoreh;
 102   translate([-plugslop,0,0]) GpsPlugPlug(-plugslop);
 103   mirror([0,0,1]) translate([plug2lhs, plug2bot, 0]) {
 104     cube([plugw, plugh, plugtotald-0.05]);
 105     translate([0, -plugwireh, pluggapd])
 106       cube([plugw, plugwireh+0.05, plugtotald-pluggapd]);
 107   }
 108 }
 109
 110 lhsteethu = 2;
 111
 112 module GpsLHSMask(xslop=0){
 113   translate([plug2lhs + plugw+plugh+plugstrutw,
 114              0,
 115              -50]) {
 116     for (iter=[-100/lhsteethu : 100/lhsteethu]) {
 117       translate([0, iter*lhsteethu*2, 0]) {
 118         linear_extrude(height=100) {
 119           polygon([[-300,     0],
 120                    [   0,     0],
 121                    [lhsteethu,lhsteethu],
 122                    [   0,     lhsteethu*2],
 123                    [-300,     lhsteethu*2+0.1]]);
 124         }
 125       }
 126     }
 127   }
 128 }
 129
 130 module GpsAssembled(){ ////toplevel
 131   GpsBody();
 132   GpsPlug();
 133 }
 134
 135 module GpsBodyLT(){
 136   intersection(){
 137     GpsBody();
 138     GpsLHSMask();
 139   }
 140 }
 141
 142 module GpsBodyRT(){
 143   difference(){
 144     GpsBody();
 145     GpsLHSMask(bodylhsrhsslop);
 146   }
 147 }
 148
 149 module GpsPlugT(){ ////toplevel
 150   rotate([0,-90,0]) GpsPlug();
 151 }
 152
 153 module InsertionCube(){
 154   midw = nestlew/2;
 155   midd = min(nestledl,nestledr);
 156   midddb = max(nestleddbl,nestleddbr);
 157
 158   based0 = nestleddf;
 159   based1 = midd - midddb;
 160   basew0 = -nestledwr;
 161   basew1 = +nestledwl-nestlew;
 162
 163   difference(){
 164     polyhedron
 165       (points=[[          +0      ,            +0,        0], // 0
 166                [          +0      ,            +nestledr, 0], // 1
 167                [          -midw   ,            +midd,     0], // 2
 168                [          -nestlew,            +nestledl, 0], // 3
 169                [          -nestlew,            +0,        0], // 4
 170                [-nestledwr+0      , +nestleddf +0,        -nestleh], // 5
 171                [-nestledwr+0      , -nestleddbr+nestledr, -nestleh], // 6
 172                [          -midw   , -midddb    +midd,     -nestleh], // 7
 173                [+nestledwl-nestlew, -nestleddbl+nestledl, -nestleh], // 8
 174                [+nestledwl-nestlew, +nestleddf +0,        -nestleh]], // 9
 175        triangles=[[0,1,6],[6,5,0],
 176                   [1,2,7],[7,6,1],
 177                   [2,3,8],[8,7,2],
 178                   [3,4,9],[9,8,3],
 179                   [4,0,5],[5,9,4],
 180                   [4,3,2],[2,1,0],[0,4,2],
 181                   [7,8,9],[5,6,7],[7,9,5]],
 182        convexity=3);
 183   }
 184 }
 185
 186 //GpsPlugT();
 187 //GpsAssembled();
 188 //GpsBody();
 189
 190 InsertionCube();