adafruit-powerboost-common.scad

   1 // -*- C -*-
   2
   3 include <nutbox.scad>
   4
   5 psu_sz  = psu_sz_nom + [ 0.11, 0.44 ] + [ 0.25, 0.25 ];
   6
   7 psu_th = 1.70 + 0.25;
   8 psu_th_for_clamp = 1.50;
   9
  10 psu_hole_dia = 2.5 - 0.3;
  11 psu_connector_z = 2.9 + 0.1;
  12 psu_connector_z_overlap = 0.15;
  13 psu_connector_depth = 6.25;
  14 psu_connector_w = 8.0 + 0.5;
  15 psu_usb_protr = 0.6;
  16
  17 psu_clamp_th = 4.0 + 0.75;
  18 psu_clamp_w = 8.0;
  19 psu_clamp_gap = 0.4;
  20
  21 psu_board_clamp_ovlp = 4.5;
  22 psu_board_support_wall = 2;
  23 psu_board_nutbox = nutbox_data_M3;
  24
  25 psu_y = +psu_sz[1]/2 + psu_usb_protr;
  26
  27 // ----- calculated -----
  28
  29 psu_z = NutBox_h_base(psu_board_nutbox);
  30 psu_z_down = psu_z + 0.1;
  31
  32 module PsuBoardRepresentation(){
  33   linear_extrude(height= psu_th)
  34     square(center=true, [psu_sz[0],psu_sz[1]]);
  35 }
  36
  37 module PsuRepresentation(){
  38   PsuBoardRepresentation();
  39   translate([0, -psu_sz[1]/2, -psu_connector_z])
  40     linear_extrude(height= psu_connector_z + psu_connector_z_overlap)
  41     rectfromto([ -psu_connector_w/2, -10 ],
  42                [ +psu_connector_w/2, psu_connector_depth ]);
  43 }
  44
  45 module AtPsuMountCorner(mx,my){
  46   mirror([mx,0,0])
  47     mirror([0,my,0])
  48       translate(-0.5 * [psu_sz[0], psu_sz[1], 0]
  49                 -1 * [0,0, psu_z_down])
  50         children();
  51 }
  52
  53 module PsuMountCornerExtrude(mx,my, plus_z=board_support_z){
  54   AtPsuMountCorner(mx,my){
  55     linear_extrude(height= psu_z_down + plus_z, convexity=10) {
  56       children();
  57     }
  58   }
  59 }
  60
  61 module PsuMountPositiveMain(){
  62   for (mx=[0,1]) {
  63     for (my=[0,1]) {
  64       PsuMountCornerExtrude(mx,my){
  65         rectfromto(-[1,1]*psu_board_support_wall,
  66                    +[1,1]*board_support_ovlp);
  67       }
  68     }
  69     // mount above at plug end
  70     PsuMountCornerExtrude(mx,0, psu_th + psu_board_support_wall){
  71       rectfromto(-[1,1]*psu_board_support_wall,
  72                  [board_support_ovlp,
  73                   board_support_ovlp_ceil]);
  74     }
  75   }
  76   translate([0,0, -psu_z_down])
  77     linear_extrude(psu_z_down - psu_baffle_gap, convexity=10)
  78       PsuLedBafflePlan();
  79 }
  80
  81 module PsuMountNegative(){
  82   axis = [0, -psu_sz[1]/2, psu_th];
  83   PsuRepresentation();
  84   translate(axis)
  85     rotate([atan(2 * board_support_z / psu_sz[1]),
  86             0,0])
  87     translate(-axis)
  88     PsuBoardRepresentation();
  89 }
  90
  91 module PsuMountPositive(){
  92   difference(){
  93     intersection(){
  94       PsuMountPositiveMain();
  95       linextr_y_xz(-psu_y, psu_sz[1]*2) square(100, center=true);
  96     }
  97     PsuMountNegative();
  98     intersection(){
  99       hull(){
 100         PsuBoardRepresentation();
 101         translate([0,0,5]) PsuBoardRepresentation();
 102       }
 103       translate([-20,0,-20]) cube(40);
 104     }
 105   }
 106   for (mx=[0,1]) {
 107     PsuMountCornerExtrude(mx,1){
 108       translate([psu_sz[0]/2 - psu_hole_pos[1],
 109                  psu_hole_pos[0]]
 110                 + board_gap * [1,1] )
 111         circle(r= psu_hole_dia/2);
 112     }
 113   }
 114   translate([0, psu_sz[1]/2 + psu_board_nutbox[0]/2, 0])
 115     rotate([0,0,180])
 116     NutBox(psu_board_nutbox, psu_z_down);
 117 }
 118
 119 module PsuClamp(){ ////toplevel
 120   rotate([180,0,0]) difference(){
 121     linear_extrude(height=psu_clamp_th + psu_th_for_clamp, convexity=5) {
 122       difference(){
 123         hull(){
 124           circle(r = fix_sz/2);
 125           translate([ -psu_board_nutbox[0]/2, 0])
 126             square(center=true, [ psu_board_clamp_ovlp*2, psu_clamp_w ]);
 127         }
 128         circle(r = psu_board_nutbox[0]/2);
 129       }
 130     }
 131     translate([0,0,-1]) linear_extrude(height=psu_th_for_clamp+1) {
 132       translate([ -psu_board_nutbox[0]/2 + psu_clamp_gap, 0 ])
 133         mirror([1,0])
 134         translate([0,-20]) square(40);
 135     }
 136   }
 137 }
 138
 139 module PsuLedWindowsPlan(){
 140   difference(){
 141     PsuLedWindowsPlanCore();
 142     PsuLedBafflePlan();
 143   }
 144 }
 145
 146 module PsuMountDemo(ceil = 2.5) { ////toplevel
 147   translate([0, psu_y, psu_z]) {
 148     PsuMountPositive();
 149     %PsuMountNegative();
 150     color("yellow") translate([0,0, -psu_z - ceil])
 151       linear_extrude(height=0.4, convexity=10)
 152       PsuLedWindowsPlan();
 153   }
 154 }