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NopSCADlib/vitamins/psu.scad
Chris Palmer 245591aefa Fixed name clash with grill
2019-06-12 09:46:14 +01:00

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//
// NopSCADlib Copyright Chris Palmer 2018
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// This file is part of NopSCADlib.
//
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>.
//
//
//! Powersupplies. Can be a simple cube or can be defined by a list of six faces, each with thickness, holes, cutouts, etc.
//!
//! Face order is bottom, top, left, right, front, back.
//
include <../core.scad>
use <../utils/maths.scad>
use <../utils/sector.scad>
use <../utils/round.scad>
include <screws.scad>
use <fan.scad>
use <iec.scad>
use <rocker.scad>
include <../printed/fan_guard.scad>
function psu_face_holes(type) = type[0]; //! List of screw hole positions
function psu_face_thickness(type) = type[1]; //! The thickness
function psu_face_cutouts(type) = type[2]; //! List of polygons to remove
function psu_face_grill(type) = type[3]; //! Is this face a grill
function psu_face_fan(type) = type[4]; //! Fan x,y position and type
function psu_face_iec(type) = type[5]; //! IEC connector x,y, rotation and type
function psu_face_switch(type) = type[6]; //! Rocker switch x,y, rotation and type
function psu_name(type) = type[1]; //! The part name
function psu_length(type) = type[2]; //! Length
function psu_width(type) = type[3]; //! Width
function psu_height(type) = type[4]; //! Height
function psu_screw(type) = type[5]; //! Screw type
function psu_screw_hole_radius(type) = type[6]; //! Clearance hole for screw, bigger than normal on ATX
function atx_psu(type) = type[7]; //! True if an ATX style PSU
function psu_left_bay(type) = type[8]; //! Bay for terminals
function psu_right_bay(type) = type[9]; //! Bay for heatsink
function psu_terminals(type) = type[10]; //! How many terminals and the y offset from the back
function psu_faces(type) = type[11]; //! List of face descriptions
function psu_accessories(type) = type[12]; //! Accessories to add to BOM, e.g. mains lead
function terminal_block_pitch(type) = type[0]; //! Pitch between screws
function terminal_block_divider(type) = type[1]; //! Width of the dividers
function terminal_block_height(type) = type[2]; //! Height of the dividers
function terminal_block_depth(type) = type[3]; //! Total depth
function terminal_block_height2(type) = type[4]; //! Height under the contacts
function terminal_block_depth2(type) = type[5]; //! Depth of contact well
function terminal_block_length(type, ways) = terminal_block_pitch(type) * ways + terminal_block_divider(type); //! Total length of terminal block
module terminal_block(type, ways) { //! Draw a power supply terminal block
tl = terminal_block_length(type, ways);
depth = terminal_block_depth(type);
depth2 = terminal_block_depth2(type);
div = terminal_block_divider(type);
h = terminal_block_height(type);
h2 = terminal_block_height2(type);
pitch = terminal_block_pitch(type);
back_wall = depth - depth2;
contact_depth = depth2 - back_wall;
contact_width = pitch - div;
contact_h = 0.4;
washer_t = 1.2;
translate([0, -tl]) {
color(grey20) {
cube([depth, tl, h2]);
translate([depth2, 0])
cube([depth - depth2, tl, h]);
for(i = [0 : ways])
translate([0, i * pitch + div])
rotate([90, 0, 0])
linear_extrude(height = div)
hull() {
r = 2;
square([depth, eps]);
translate([depth - eps, 0])
square([eps, h]);
translate([r, h - r])
circle4n(r);
}
}
color("silver")
for(i = [0 : ways - 1]) translate([0, i * pitch + div, h2]) {
translate([back_wall, 1])
cube([contact_depth, contact_width - 2, contact_h]);
translate([back_wall + contact_depth / 2 - contact_width / 2, 0])
cube([contact_width, contact_width, contact_h + washer_t]);
translate([back_wall + contact_depth / 2, contact_width / 2, contact_h + washer_t])
not_on_bom() no_explode()
screw(M3_pan_screw, 8);
}
}
}
function psu_face_transform(type, face) = //! Returns a transformation matrix to get to the specified face
let(l = psu_length(type),
w = psu_width(type),
h = psu_height(type),
f = psu_faces(type)[face],
left = psu_left_bay(type),
right = psu_right_bay(type),
rotations = [[180, 0, 0], [0, 0, 0], [90, 0, -90], [90, 0, 90], [90, 0, 0], [-90, 0, 0]],
translations = [h / 2, h / 2, l / 2 - left, l / 2 - right, w / 2, w / 2]
) translate([0, 0, h / 2]) * rotate(rotations[face]) * translate([0, 0, translations[face]]);
grill_hole = 4.5;
grill_gap = 1.5;
module psu_grill(width, height) {
nx = floor(width / (grill_hole + grill_gap));
xpitch = width / nx;
ny = floor(height / ((grill_hole + grill_gap) * cos(30)));
ypitch = height / ny;
for(y = [0 : ny - 1], x = [0 : nx - 1 - (y % 2)]) {
x = -width / 2 + (x + 0.5 + (y % 2) / 2) * xpitch;
y = -height / 2 + (y + 0.5) * ypitch;
translate([x, y])
circle(d = grill_hole);
}
}
module psu(type) { //! Draw a power supply
vitamin(str("psu(", type[0], "): PSU ", psu_name(type)));
for(part = psu_accessories(type))
vitamin(part);
l = psu_length(type);
w = psu_width(type);
h = psu_height(type);
faces = psu_faces(type);
left = psu_left_bay(type);
right = psu_right_bay(type);
if(len(faces) < 2)
translate_z(h / 2)
color("silver") cube([l, w, h], center = true);
else {
for(i = [0 : 1 : len(faces) - 1]) {
f = faces[i];
t = psu_face_thickness(f);
xw = [l, l - left - right, w, w, l, l - left - right][i];
yw = [w, w, h, h, h, h][i];
xo = [0, left / 2 - right / 2, 0, 0, 0, left / 2 - right / 2][i];
fan = psu_face_fan(f);
iec = psu_face_iec(f);
switch = psu_face_switch(f);
multmatrix(psu_face_transform(type, i))
translate([xo, 0, -t]) {
color("silver") linear_extrude(height = t)
union() {
difference() {
square([xw, yw], center = true);
cutouts = psu_face_cutouts(f);
if(cutouts)
for(cutout = cutouts)
polygon([for(p = cutout) p]);
for(h = psu_face_holes(f))
translate(h)
drill(screw_pilot_hole(psu_screw(type)), 0);
if(psu_face_grill(f)) {
mx = 6;
my1 = i == f_top && psu_face_grill(faces[f_back]) ? 0 : 6;
my2 = i == f_back && psu_face_grill(faces[f_top]) ? 0 : 6;
translate([0, (my2 - my1) / 2])
psu_grill(xw - 2 * mx, yw - my1 - my2);
}
if(fan)
translate([fan.x, fan.y]) intersection() {
fan_holes(fan.z, h = 0);
difference() {
square(inf, true);
fan_guard(fan.z, thickness = 0, grill = true);
}
}
if(iec)
translate([iec.x, iec.y])
rotate(iec.z)
iec_holes(iec[3], 0);
if(switch)
translate([switch.x, switch.y])
rotate(switch.z)
rocker_hole(switch[3], 0);
}
}
not_on_bom() no_explode() {
if(fan)
translate([fan.x, fan.y, -fan_depth(fan.z) / 2]) {
fan(fan.z);
screw = alternate_screw(hs_cs_cap, fan_screw(fan.z));
fan_hole_positions(fan.z)
translate_z(t + eps)
screw(screw, 8);
}
if(iec)
translate([iec.x, iec.y])
rotate(iec.z)
iec_assembly(iec[3], t);
if(switch)
translate([switch.x, switch.y, t])
rotate(switch.z)
rocker(switch[3]);
}
}
}
}
// Special case for lighting type PSUs with teminals at the end
terminals = psu_terminals(type);
if(terminals) {
ft = psu_face_thickness(faces[f_front]);
bt = psu_face_thickness(faces[f_back]);
rt = psu_face_thickness(faces[f_right]);
lt = psu_face_thickness(faces[f_left]);
cutout = psu_face_cutouts(faces[f_left])[0];
z = cutout[2].y + h / 2;
pw = w -ft - bt;
pl = l - right - rt;
pcb_thickness = 1.6;
heatsink_offset = 13.5;
color("#FCD67E")
translate([(-right - rt) / 2, (ft - bt) / 2, z - pcb_thickness])
linear_extrude(height = pcb_thickness)
difference() {
square([pl, pw], center = true);
translate([-pl / 2, -pw / 2])
square(16, center = true);
}
// earth strap
tab_w = w / 2 + cutout[2].x;
color("silver")
translate([-l / 2, w / 2 - tab_w, z])
cube([left, tab_w - bt, lt]);
// Earth pilar and screw
earth_inset = 4.5;
earth_d = 5;
translate([-l / 2 + earth_inset, w / 2 - tab_w / 2]) {
color("silver")
cylinder(d = earth_d, h = z - pcb_thickness);
translate_z(z + lt)
not_on_bom() no_explode()
spring_washer(M3_washer)
screw(M3_pan_screw, 8);
}
// terminal block
tb = terminals[2];
if(tb)
translate([-l / 2, w / 2 - terminals.y, z])
terminal_block(tb, terminals[0]);
// Heatsink
//
heatsink_cutout = psu_face_cutouts(faces[f_right])[0];
if(right && heatsink_cutout) {
z_top = heatsink_cutout[1].y + h / 2;
length = heatsink_cutout[2].x + w / 2 - 1.5;
color("silver")
translate([l / 2, -w / 2])
rotate([90, 0, 180])
linear_extrude(height = length) {
translate([right + rt, z_top])
rotate(135)
square([rt, right * sqrt(2)]);
square([rt, z_top - right]);
translate([rt, z_top - right])
sector(rt, 135, 180);
}
}
}
}
module psu_screw_positions(type, face = undef) { //! Position children at the screw positions on the preferred mounting face, which can be overridden.
faces = psu_faces(type);
f = is_undef(face) ? faces && psu_face_holes(faces[f_bottom]) ? f_bottom
: f_front
: face;
if(len(psu_faces(type)) > f)
multmatrix(psu_face_transform(type, f))
for(point = psu_face_holes(psu_faces(type)[f]))
translate(point)
children();
}
module atx_psu_cutout(type) { //! Cut out for the rear of an ATX
holes = psu_face_holes(psu_faces(type)[f_front]);
translate([holes[0].x, -psu_width(type) / 2, psu_height(type) / 2 + holes[0].y])
rotate([90, 0, 0])
linear_extrude(height = 100, center = true)
round(5)
polygon([ // https://www.techpowerup.com/forums/threads/pc-component-dimensions.157239, tweaked
[18.7, -13],
[ 5.7, 0],
[ 5.7, 54],
[18.7, 67],
[127, 67],
[140, 67 - 13 / tan(52)],
[140, -5 + 11 / tan(52)],
[129, -5],
[81.3, -5],
[73.3, -13],
]);
}
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