131 lines
5.5 KiB
OpenSCAD
131 lines
5.5 KiB
OpenSCAD
//
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// NopSCADlib Copyright Chris Palmer 2018
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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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//! LED volt meter modules available from China and a printed bezel that allows them to be mounted into a
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//! CNC cut panel. The meter is held in the bezel by melting the stakes with a soldering iron set to 200°C. The
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//! bezel is fixed in the panel with hot glue.
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//!
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//! The 7 SEGMENT.TTF font from the [docs](docs) directory needs to be installed to get realistic digits.
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//
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include <../core.scad>
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led_meter = ["led_meter", 22.72, 10.14, 6.3, 22.72, 11.04, 0.96, 30, 4.2, 26, 2.2 / 2];
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function meter() = led_meter; //! Default meter type
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function meter_length(type = led_meter) = type[1]; //! Length of body
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function meter_width(type = led_meter) = type[2]; //! Width of body
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function meter_height(type = led_meter) = type[3]; //! Height of body excluding PCB
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function meter_pcb_length(type = led_meter) = type[4]; //! PCB length excluding lugs
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function meter_pcb_width(type = led_meter) = type[5]; //! PCB width
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function meter_pcb_thickness(type = led_meter) = type[6]; //! PCB thickness
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function meter_lug_length(type = led_meter) = type[7]; //! PCB length including lugs
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function meter_lug_width(type = led_meter) = type[8]; //! Lug width
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function meter_hole_pitch(type = led_meter) = type[9]; //! Lug hole pitch
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function meter_hole_radius(type = led_meter) = type[10]; //! Lug hole radius
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module meter_hole_positions(type = led_meter) //! Position children over the holes
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for(side = [-1, 1])
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translate([side * meter_hole_pitch(type) / 2, 0])
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children();
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module meter(type = led_meter, colour = "red", value = "888", display_colour = false) //! Draw a meter with optional colour and display value
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{
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vitamin(str("meter(", type[0], arg(colour, "red", "colour"), "): LED meter ", colour));
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color("grey")
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translate_z(meter_height(type) / 2)
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cube([meter_length(type), meter_width(type), meter_height(type)], center = true);
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color("green")
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translate_z(meter_height(type))
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linear_extrude(height = meter_pcb_thickness(type))
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difference() {
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union() {
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square([meter_pcb_length(type), meter_pcb_width(type)], center = true);
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square([meter_lug_length(type), meter_lug_width(type)], center = true);
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}
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meter_hole_positions(type)
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circle(meter_hole_radius(type));
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}
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color(display_colour ? display_colour : colour)
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linear_extrude(height = 0.2, center = true)
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mirror([1,0,0])
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text(value, font = "7 segment", valign = "center", halign = "center", size = meter_width(type) - 2, spacing = 1.2);
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}
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clearance = 0.1;
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overlap = 1;
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flange_t = 1;
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function meter_bezel_wall(type = led_meter) = (meter_lug_length(type) - meter_length(type)) / 2; //! Printed bezel wall thickness
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function meter_bezel_rad(type = led_meter) = meter_bezel_wall(type); //! Printed bezel corner radius
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function meter_bezel_length(type = led_meter) = meter_length(type) + 2 * (meter_bezel_wall(type) + overlap); //! Printed bezel length
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function meter_bezel_width(type = led_meter) = meter_width(type) + 2 * (meter_bezel_wall(type) + overlap); //! Printed bezel width
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module meter_bezel_hole(type = led_meter, h = 100) { //! Make a hole to fit the meter Bezel
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wall = meter_bezel_wall(type) + clearance;
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rad = meter_bezel_rad(type) + clearance;
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l = meter_length(type);
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w = meter_width(type);
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extrude_if(h)
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rounded_square([l + 2 * wall, w + 2 * wall], rad);
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}
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module meter_bezel(type = led_meter) { //! Generate the STL for the meter bezel
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stl("meter_bezel");
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wall = meter_bezel_wall(type);
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rad = meter_bezel_rad(type);
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l = meter_length(type);
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w = meter_width(type);
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h = meter_height(type);
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union() {
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linear_extrude(height = h)
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difference() {
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rounded_square([l + 2 * wall, w + 2 * wall], rad);
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square([l + 2 * clearance, w + 2 * clearance], center = true);
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}
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linear_extrude(height = flange_t)
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difference() {
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rounded_square([l + 2 * wall + 2 * overlap, w + 2 * wall + 2 * overlap], rad + overlap);
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square([l + 2 * clearance, w + 2 * clearance], center = true);
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}
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meter_hole_positions(type)
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cylinder(r = meter_hole_radius(type), h = h + meter_pcb_thickness(type) * 2);
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}
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}
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module meter_assembly(type = led_meter, colour = "red", value = "888", display_colour = false) { //! Meter assembled into the bezel
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vflip()
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translate_z(-flange_t) {
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color("dimgrey") meter_bezel(type);
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meter(type, colour, value, display_colour);
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}
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}
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