NopSCADlib/vitamins/microswitch.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/>.
//
//
//! Used for limit switches.
//
include <../core.scad>
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microswitch_contact_color = brass;
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function microswitch_thickness(type) = type[2]; //! Body thickness
function microswitch_width(type) = type[3]; //! Body width
function microswitch_length(type) = type[4]; //! Body length
function microswitch_radius(type) = type[5]; //! Body corner radius
function microswitch_hole_d(type) = type[6]; //! Screw hole diameter
function microswitch_holes(type) = type[7]; //! Hole positions
function microswitch_button_w(type) = type[8]; //! Button width
function microswitch_button_t(type) = type[9]; //! Button thickness
function microswitch_button_pos(type)= type[10]; //! Button position
function microswitch_legs(type) = type[11]; //! Leg positions
function microswitch_leg(type) = type[12]; //! Leg types
function microswitch_body_clr(type) = type[13]; //! Body colour
function microswitch_button_clr(type)= type[14]; //! Button colour
function microswitch_lower_extent(type) = let(leg = microswitch_leg(type)) min([for(pos = microswitch_legs(type)) pos.y - leg.y / 2]); //! How far legs extend downwards
function microswitch_right_extent(type) = let(leg = microswitch_leg(type)) max([microswitch_length(type) / 2, for(pos = microswitch_legs(type)) pos.x + leg.x / 2]); //! How far legs extend right
module microswitch_hole_positions(type) //! Place children at the hole positions
{
for(hole = microswitch_holes(type))
translate(hole)
children();
}
module microswitch_wire_positions(type, skip = undef) { //! Place children at the leg hole positions
leg = microswitch_leg(type);
legs = microswitch_legs(type);
for(i = [0 : len(legs) - 1])
if(i != skip)
let(pos = legs[i])
translate(leg[3] ? pos + leg[4] : pos - [leg.x, leg.y] / 6)
children();
}
module microswitch(type) { //! Draw specified microswitch
vitamin(str("microswitch(", type[0], "): Microswitch ", type[1]));
d = microswitch_button_t(type);
color(microswitch_body_clr(type))
linear_extrude(height = microswitch_thickness(type), center = true)
difference() { // main body
rounded_square([microswitch_length(type), microswitch_width(type)], microswitch_radius(type));
microswitch_hole_positions(type)
circle(d = microswitch_hole_d(type));
}
color(microswitch_button_clr(type)) // orange button
translate(microswitch_button_pos(type) - [0, d / 2])
linear_extrude(height = microswitch_button_w(type), center = true)
hull() {
circle(d = d);
translate([0, -3])
circle(d = d);
}
color(microswitch_contact_color) // yellow contacts
for(pos = microswitch_legs(type))
translate(pos) {
leg = microswitch_leg(type);
vertical = leg.y > leg.x;
if(vertical)
rotate([0, 90, 0])
linear_extrude(height = leg.x, center = true)
difference() {
square([leg.z, leg.y], center = true);
if(leg[3])
translate(leg[4])
circle(d = leg[3]);
}
else
rotate([90, 0, 0])
linear_extrude(height = leg.y, center = true)
difference() {
square([leg.x, leg.z], center = true);
if(leg[3])
translate(leg[4])
circle(d = leg[3]);
}
if(!vertical && pos.y < -microswitch_width(type) / 2) {
gap = -microswitch_width(type) / 2 - pos.y;
translate([-leg.x / 2 + leg.y / 2, gap / 2])
cube([leg.y, gap, leg.z], center = true);
}
}
}