mirror of
https://github.com/DJSundog/NopSCADlib.git
synced 2024-11-14 10:53:50 -05:00
106 lines
3.3 KiB
OpenSCAD
106 lines
3.3 KiB
OpenSCAD
//
|
|
// 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/>.
|
|
//
|
|
|
|
//
|
|
//! Light dependent resistors.
|
|
//!
|
|
//! Larger ones seem to have both a higher dark resistance and a lower bright light resistance.
|
|
//
|
|
include <../utils/core/core.scad>
|
|
|
|
function ldr_description(type) = type[1]; //! Description
|
|
function ldr_diameter(type) = type[2]; //! The diameter of the round bit
|
|
function ldr_width(type) = type[3]; //! Across the flats
|
|
function ldr_thickness(type) = type[4]; //! Thickness
|
|
function ldr_pitch(type) = type[5]; //! Pitch between the leads
|
|
function ldr_active(type) = type[6]; //! The active width
|
|
function ldr_lead_d(type) = type[7]; //! The lead diameter
|
|
|
|
module LDR(type, lead_length = 3) { //! Draw an LDR, can specify the lead length
|
|
vitamin(str("ldr(", type[0], "): Light dependent resistor - ", ldr_description(type)));
|
|
|
|
module shape()
|
|
intersection() {
|
|
circle(d = ldr_diameter(type));
|
|
|
|
square([100, ldr_width(type)], center = true);
|
|
}
|
|
|
|
function serpentine_t() = let(w = ldr_width(type), n = floor(w / 0.5) + 0.5) w / (n * 2);
|
|
|
|
module serpentine() {
|
|
w = ldr_width(type);
|
|
|
|
t = serpentine_t();
|
|
pitch = 2 * t;
|
|
l = ldr_active(type);
|
|
lines = ceil(w / pitch);
|
|
|
|
for(i = [0 : lines - 1])
|
|
translate([0, i * pitch - w / 2 + t / 2]) {
|
|
square([l - 3 * t, t], center = true);
|
|
|
|
end = i % 2 ? 1 : -1;
|
|
$fn = 16;
|
|
translate([end * (l / 2 - 1.5 * t), t])
|
|
rotate(-end * 90)
|
|
difference() {
|
|
semi_circle(1.5 * t);
|
|
|
|
semi_circle(t / 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
t = ldr_thickness(type);
|
|
|
|
color("white")
|
|
linear_extrude(t - 0.4)
|
|
shape();
|
|
|
|
color("orange")
|
|
translate_z(t - 0.4)
|
|
linear_extrude(0.1)
|
|
shape();
|
|
|
|
color([0.9, 0.9, 0.9])
|
|
translate_z(t - 0.3)
|
|
linear_extrude(0.1)
|
|
difference() {
|
|
offset(-serpentine_t())
|
|
shape();
|
|
|
|
serpentine();
|
|
}
|
|
|
|
color("silver")
|
|
for(side = [-1, 1])
|
|
translate([side * ldr_pitch(type) / 2, 0]) {
|
|
translate_z(-lead_length)
|
|
cylinder(d = ldr_lead_d(type), h = lead_length, $fn = 16);
|
|
|
|
translate_z(t - 0.3)
|
|
cylinder(d = 1.5 * ldr_lead_d(type), h = 0.2, $fn = 16);
|
|
}
|
|
color([1, 1, 1, 0.25])
|
|
translate_z(t - 0.3 + eps)
|
|
linear_extrude(0.3)
|
|
shape();
|
|
}
|