NopSCADlib/vitamins/ssr.scad

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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/>.
//
//
//! Solid state relays.
//
include <../utils/core/core.scad>
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function ssr_part(type) = type[1]; //! Description
function ssr_length(type) = type[2]; //! Length
function ssr_width(type) = type[3]; //! Width
function ssr_height(type) = type[4]; //! Height
function ssr_base_t(type) = type[5]; //! Thickness of metal base
function ssr_hole_d(type) = type[6]; //! Screw hole diameter
function ssr_hole_pitch(type) = type[7]; //! Difference between screw centres
function ssr_slot_w(type) = type[8]; //! Width of the screw slot in the body
module ssr_hole_positions(type) //! Place children at the screw positions
for(end = [-1, 1])
translate([end * ssr_hole_pitch(type) / 2, 0])
children();
module ssr(type) { //! Draw specified SSR
vitamin(str("ssr(", type[0], "): Solid state relay ", ssr_part(type)));
l = ssr_length(type);
w = ssr_width(type);
t = ssr_base_t(type);
h = ssr_height(type);
color("silver") linear_extrude(t) difference() {
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square([l, w], center = true);
ssr_hole_positions(type)
circle(d = ssr_hole_d(type));
}
color([242/255, 236/255, 220/255])
translate_z(t)
linear_extrude(h - t) difference() {
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square([l, w], center = true);
for(end = [-1, 1])
hull() {
translate([end * ssr_hole_pitch(type) / 2, 0])
circle(d = ssr_slot_w(type));
translate([end * ssr_hole_pitch(type), 0])
circle(d = ssr_slot_w(type));
}
}
}
use <screw.scad>
use <nut.scad>
use <washer.scad>
module ssr_assembly(type, screw, thickness) { //! Assembly with fasteners in place
screw_length = screw_length(screw, thickness + ssr_base_t(type), 2, nyloc = true);
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ssr(type);
ssr_hole_positions(type) {
translate_z(ssr_base_t(type))
nut_and_washer(screw_nut(screw), true);
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translate_z(-thickness)
vflip()
screw_and_washer(screw, screw_length);
}
}