anke-gps-bracket.scad

   1 // -*- C -*-
   2
   3 include <doveclip.scad>
   4
   5 // Dimensions of the main GPS body
   6 outerw = 120 + 2.5;
   7 outerh =  75 - 0.2;
   8 outert =  15 - 1.0;
   9 outerbackbevel = 3;
  10
  11 // Dimensions of the bezel area round the edges
  12 bezelw =    11 - 0.5;
  13 bezelboth = 11 - 0.5;
  14 bezeltoph =  7 - 0.5;
  15
  16 // Dimensions of the speaker at the back
  17 spkrdia =  22;
  18 spkr2bot = 19;
  19 spkr2rhs = 25;
  20
  21 // Dimensions of the plug and wire
  22 plugw =      12;
  23 plugh =       9;
  24 plug2bot =   11;
  25 plug2lhs =   11;
  26 plugtotald = 15;
  27 pluggapd =    5;
  28
  29 // Dimensions of the hole in the tray
  30 //   width and height (vertical) at the top
  31 nestleh = 53;
  32 nestlew = 55.4 - 0.5;
  33 //   depths (back to front distance):
  34 nestledl = 38.8 - 0.5;
  35 nestledr = 42.7 - 0.5;
  36 //   differences in width, depth, at bottom:
  37 nestledwl = 3.0;
  38 nestledwr = 2.4;
  39 nestleddf = 4.0;
  40 nestleddbl = 3.3;
  41 nestleddbr = 3.6;
  42
  43 nestlewallmin = 4;
  44 nestleceilmin = 4;
  45
  46 // Adjustment for the GPS attitude
  47 gpsazimuth = 45;
  48 gpsrightwardoffset = 5;
  49 gpsrearwardoffset = 2;
  50
  51 // Amount of wire protrusion to allow for
  52 plugwiremoreh = 25;
  53
  54 // Slops and steps etc.
  55 plugslop = 0.5;
  56 plughstep = 1.5;
  57 bodylhsrhsslop = 0.5;
  58
  59 // Dimensions for strength only
  60 screent = 1.0;
  61 plugstrutw = 4;
  62 plugstrutt = min(outert, 5);
  63 nestledoveclipw = 20;
  64
  65 module GpsPlugPlug(slop){
  66   effhslop = slop - plughstep;
  67   effplugw = plugw + slop*2;
  68   effplugh = plugh + effhslop*2;
  69   translate([plug2lhs-slop, plug2bot-effhslop, -1])
  70     cube([effplugw, effplugh, outert+2]);
  71 }
  72
  73 module GpsBodyOuterBevel(len){
  74   translate([0,-1,0]) {
  75     rotate([-90,0,0]) {
  76       linear_extrude(height=len+2) {
  77         polygon([[-outerbackbevel, 0],
  78                  [ 0, outerbackbevel],
  79                  [outerbackbevel, 0],
  80                  [ 0, -outerbackbevel]]);
  81       }
  82     }
  83   }
  84 }
  85
  86 module GpsBody() { ////toplevel
  87   difference(){
  88     union(){
  89       difference(){
  90         cube([outerw, outerh, outert]);
  91         translate([bezelw, bezelboth, screent])
  92           cube([outerw-bezelw*2, outerh-bezelboth-bezeltoph, outert]);
  93         translate([outerw-spkr2rhs, spkr2bot, -1])
  94           cylinder(r=spkrdia/2, h=outert+2);
  95       }
  96       translate([plug2lhs+plugw/2, plug2bot+plugh/2, 0])
  97         cylinder(r=(plugw+plugh)/2, h=outert);
  98       for (x=[plug2lhs-plugstrutw, plug2lhs+plugw])
  99         translate([x, 0.1, 0])
 100           cube([plugstrutw, outerh-0.2, plugstrutt-0.10]);
 101     }
 102     GpsPlugPlug(0);
 103     for (x=[0,outerw]) translate([x,0,0]) GpsBodyOuterBevel(outerh);
 104     for (y=[0,outerh]) translate([0,y,0])
 105       rotate([0,0,-90]) GpsBodyOuterBevel(outerw);
 106   }
 107 }
 108
 109 module GpsPlug() {
 110   plugwireh = plug2bot + plugwiremoreh;
 111   translate([-plugslop,0,0]) GpsPlugPlug(-plugslop);
 112   mirror([0,0,1]) translate([plug2lhs, plug2bot, 0]) {
 113     cube([plugw, plugh, plugtotald-0.05]);
 114     translate([0, -plugwireh, pluggapd])
 115       cube([plugw, plugwireh+0.05, plugtotald-pluggapd]);
 116   }
 117 }
 118
 119 lhsteethu = 2;
 120
 121 module GpsLHSMask(xslop=0){
 122   translate([plug2lhs + plugw+plugh+plugstrutw,
 123              0,
 124              -50]) {
 125     for (iter=[-100/lhsteethu : 100/lhsteethu]) {
 126       translate([0, iter*lhsteethu*2, 0]) {
 127         linear_extrude(height=100) {
 128           polygon([[-300,     0],
 129                    [   0,     0],
 130                    [lhsteethu,lhsteethu],
 131                    [   0,     lhsteethu*2],
 132                    [-300,     lhsteethu*2+0.1]]);
 133         }
 134       }
 135     }
 136   }
 137 }
 138
 139 module GpsAssembled(){ ////toplevel
 140   GpsBody();
 141   GpsPlug();
 142 }
 143
 144 module GpsBodyLT(){
 145   intersection(){
 146     GpsBody();
 147     GpsLHSMask();
 148   }
 149 }
 150
 151 module GpsBodyRT(){
 152   difference(){
 153     GpsBody();
 154     GpsLHSMask(bodylhsrhsslop);
 155   }
 156 }
 157
 158 module GpsPlugT(){ ////toplevel
 159   rotate([0,-90,0]) GpsPlug();
 160 }
 161
 162 module NestleCubeCutout(ca,cb,d){
 163   dist = cb - ca;
 164   mirror([0,1,0]){
 165     rotate([90,0,0]){
 166       linear_extrude(height=d){
 167         polygon([[ca, -nestleh-1],
 168                  [ca, -dist/2],
 169                  [(ca+cb)/2, 0],
 170                  [cb, -dist/2],
 171                  [cb, -nestleh-1]]);
 172       }
 173     }
 174   }
 175 }
 176
 177 module NestleCube(){
 178   midw = nestlew/2;
 179   midd = min(nestledl,nestledr);
 180   midddb = max(nestleddbl,nestleddbr);
 181
 182   based0 = nestleddf;
 183   based1 = midd - midddb;
 184   basew0 = -nestledwr;
 185   basew1 = +nestledwl-nestlew;
 186
 187   cutd0 = based0 + nestlewallmin;
 188   cutd1 = based1 - nestlewallmin;
 189   cutw0 = basew0 - nestlewallmin;
 190   cutw1 = basew1 + nestlewallmin;
 191
 192   translate([-(basew0+basew1)/2, -(based0+based1)/2, 0]) difference(){
 193     polyhedron
 194       (points=[[          +0      ,            +0,        0], // 0
 195                [          +0      ,            +nestledr, 0], // 1
 196                [          -midw   ,            +midd,     0], // 2
 197                [          -nestlew,            +nestledl, 0], // 3
 198                [          -nestlew,            +0,        0], // 4
 199                [-nestledwr+0      , +nestleddf +0,        -nestleh], // 5
 200                [-nestledwr+0      , -nestleddbr+nestledr, -nestleh], // 6
 201                [          -midw   , -midddb    +midd,     -nestleh], // 7
 202                [+nestledwl-nestlew, -nestleddbl+nestledl, -nestleh], // 8
 203                [+nestledwl-nestlew, +nestleddf +0,        -nestleh]], // 9
 204        triangles=[[0,1,6],[6,5,0],
 205                   [1,2,7],[7,6,1],
 206                   [2,3,8],[8,7,2],
 207                   [3,4,9],[9,8,3],
 208                   [4,0,5],[5,9,4],
 209                   [4,3,2],[2,1,0],[0,4,2],
 210                   [7,8,9],[5,6,7],[7,9,5]],
 211        convexity=3);
 212     intersection(){
 213       NestleCubeCutout(cutw1, cutw0, max(nestledl,nestledr));
 214       rotate([0,0,90]) NestleCubeCutout(cutd0, cutd1, nestlew);
 215     }
 216   }
 217
 218   translate([gpsrightwardoffset,-gpsrearwardoffset,0])
 219     rotate([0,0,gpsazimuth])
 220     translate([nestledoveclipw/2,0,DoveClip_depth()-0.5])
 221     rotate([0,-90,0])
 222     DoveClipPairSane(count=3, h=nestledoveclipw);
 223 }
 224
 225 //GpsPlugT();
 226 //GpsAssembled();
 227 //GpsBody();
 228
 229 NestleCube();