143 lines
4.9 KiB
OpenSCAD
143 lines
4.9 KiB
OpenSCAD
//
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// NopSCADlib Copyright Chris Palmer 2020
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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//
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// This file is part of NopSCADlib.
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//
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// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
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// GNU General Public License as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along with NopSCADlib.
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// If not, see <https://www.gnu.org/licenses/>.
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//
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//
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//! Axial components for PCBs.
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//
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include <../utils/core/core.scad>
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include <../utils/round.scad>
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module wire_link(d, l, h = 1, tail = 3) { //! Draw a wire jumper link.
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vitamin(str("wire_link(", d, ", ", l, arg(h, 1, "h"), arg(tail, 3, "tail"), "): Wire link ", d, "mm x ", l / inch(1), "\""));
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r = d;
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$fn = 32;
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color("silver") {
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for(side = [-1, 1]) {
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translate([side * l / 2, 0, -tail])
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cylinder(d = d, h = tail + h - r);
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translate([side * (l / 2 - r), 0, h - r])
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rotate([90, 0, side * 90 - 90])
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rotate_extrude(angle = 90)
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translate([r, 0])
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circle(d = d);
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}
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translate_z(h)
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rotate([0, 90, 0])
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cylinder(d = d, h = l - 2 * r, center = true);
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}
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}
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function ax_res_wattage(type) = type[1]; //! Power rating
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function ax_res_length(type) = type[2]; //! Body length
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function ax_res_diameter(type)= type[3]; //! Body diameter
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function ax_res_end_d(type) = type[4]; //! End cap diameter
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function ax_res_end_l(type) = type[5]; //! End cap length
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function ax_res_wire(type) = type[6]; //! Wire diameter
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function ax_res_colour(type) = type[7]; //! Body colour
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module orientate_axial(length, height, pitch, wire_d) { // Orient horizontal or vertical and add the wires
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min_pitch = ceil((length + 1) / inch(0.1)) * inch(0.1);
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lead_pitch = pitch ? pitch : min_pitch;
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if(lead_pitch >= min_pitch) {
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not_on_bom()
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wire_link(wire_d, lead_pitch, height);
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translate_z(height)
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rotate([0, 90, 0])
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children();
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}
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else {
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not_on_bom()
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wire_link(wire_d, lead_pitch, length + 0.7 + wire_d);
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translate([-pitch / 2, 0, length / 2 + 0.2])
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children();
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}
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}
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module ax_res(type, value, tol = 5, pitch = 0) { //! Through hole axial resistor. If `pitch` is zero the minimum is used. If below the minimum the resistor is placed vertical.
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vitamin(str("ax_res(", type[0], ", ", value, arg(tol, 5, "tol"), "): Resistor ", value, " Ohms ", tol, "% ",ax_res_wattage(type), "W"));
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wire_d = ax_res_wire(type);
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end_d = ax_res_end_d(type);
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end_l = ax_res_end_l(type);
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body_d = ax_res_diameter(type);
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length = ax_res_length(type);
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h = end_d / 2;
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$fn = 32;
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r = 0.3;
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colours = ["gold", "silver", "black", "brown", "red", "orange", "yellow", "green", "blue", "violet", "grey", "white"];
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exp = floor(log(value) + eps);
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mult = exp - (len(str(value / pow(10, exp - 1))) > 2 ? 2 : 1);
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digits = str(value / pow(10, mult));
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bands = [
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for(d = digits)
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colours[ord(d) - ord("0") + 2],
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colours[mult + 2],
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tol == 1 ? "brown" :
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tol == 2 ? "red" :
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tol == 5 ? "gold" :
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tol == 10 ? "silver" : "error"
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];
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module profile(o = 0)
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intersection() {
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offset(o) round(r)
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union(){
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translate([0, -length / 2])
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square([body_d / 2, length]);
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for(end = [-1, 1])
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hull() {
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translate([0, end * (length - end_l) / 2 - end_l / 2])
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square([end_d / 2, end_l]);
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translate([0, end * length / 2])
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square([wire_d, 2 * r], center = true);
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}
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translate([-5, 0])
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square([10 + wire_d, length + 4 * r], center = true);
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}
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translate([0, -50])
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square([50, 100]);
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}
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orientate_axial(length, h, pitch, wire_d) {
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color(ax_res_colour(type))
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rotate_extrude()
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profile();
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for(i = [0 : len(bands) - 1])
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color(bands[i])
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rotate_extrude()
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intersection() {
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profile(eps);
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translate([0, length / 2 - end_l / 2 - i * (length - end_l) / (len(bands) - 1)])
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square([end_d + 1, (length - end_l) / len(bands) / 2], center = true);
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}
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}
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}
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