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Added printed knobs for pots.
This commit is contained in:
Chris Palmer
parent
c8d9bb7d09
commit
b424bea622
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14
libtest.scad
14
libtest.scad
@ -123,6 +123,7 @@ use <tests/fixing_block.scad>
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use <tests/flat_hinge.scad>
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use <tests/foot.scad>
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use <tests/handle.scad>
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use <tests/knob.scad>
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use <tests/PCB_mount.scad>
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use <tests/pocket_handle.scad>
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use <tests/printed_box.scad>
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@ -173,16 +174,19 @@ translate([x5, cable_grommets_y + 470]) {
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flat_hinges();
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}
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translate([x5, cable_grommets_y + 370])
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translate([x5, cable_grommets_y + 380])
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no_explode() socket_boxes();
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translate([x5 + 60, cable_grommets_y + 200])
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strap_handles();
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translate([640, cable_grommets_y + 200])
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printed_pulley_test();
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translate([x5, cable_grommets_y + 250])
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translate([x5, cable_grommets_y + 200])
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knobs();
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translate([x5 + 60, cable_grommets_y + 250])
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strap_handles();
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translate([x5, cable_grommets_y + 300])
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handle();
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translate([950, 600])
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166
printed/knob.scad
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166
printed/knob.scad
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@ -0,0 +1,166 @@
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//
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// NopSCADlib Copyright Chris Palmer 221
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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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//! Parametric knobs for potentiometers and encoders.
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//!
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//! A knob can be constructed by specififying all the parameters or the potentiometer can be specified to customise it for its shaft with a recess to clear the nut, washer and thread.
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//! An optional skirt and / or a pointer can be specified.
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//!
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//! The STL includes a support membrane that needs to be cut out and a thread needs to be tapped for the grub screw.
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//
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include <../core.scad>
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use <../utils/hanging_hole.scad>
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use <../utils/rounded_polygon.scad>
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use <../vitamins/potentiometer.scad>
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clearance = 0.2;
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function knob_name(type) = type[0]; //! Name for the stl maker
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function knob_top_d(type) = type[1]; //! Diameter at the top
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function knob_bot_d(type) = type[2]; //! Diameter at the bottom
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function knob_height(type) = type[3]; //! Height
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function knob_corner_r(type) = type[4]; //! Rounded top corner
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function knob_shaft_d(type) = type[5]; //! Shaft diameter
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function knob_shaft_len(type)= type[6]; //! Shaft length
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function knob_flat_d(type) = type[7]; //! The shaft diameter at the flat
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function knob_flat_h(type) = type[8]; //! The length of the flat
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function knob_screw(type) = type[9]; //! The grub screw type
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function knob_skirt(type) = type[10]; //! Skirt diameter and thickness
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function knob_recess(type) = type[11]; //! Recess diameter and thickness to clear nut and thread, diameter, nut height, thread height
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function knob_pointer(type) = type[12]; //! Pointer outside radius, [point width, back width] and height height
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function knob(name = "knob", top_d = 12, bot_d = 15, height = 18, shaft_length, skirt = [20, 2], pointer = false, corner_r = 2, screw = M3_grub_screw, shaft_d, flat_d, flat_h, recess) = //! Constructor
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[
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name, top_d, bot_d, height, corner_r, shaft_d, shaft_length, flat_d, flat_h, screw, skirt, recess, pointer
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];
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function knob_for_pot(pot, thickness, z = 1, shaft_length = undef, top_d = 12, bot_d = 15, skirt = [20, 2], pointer = false, corner_r = 2, height = 0, washer = true) = //! Construct a knob to fit specified pot
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let(s = pot_shaft(pot),
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washer = washer && pot_washer(pot) ? pot_washer(pot) : [0, 0],
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nut = pot_nut(pot) ? pot_nut(pot) : [pot_thread_d(pot) * cos(30), pot_thread_h(pot) - thickness],
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shaft_length = is_undef(shaft_length) ? s.z : min(shaft_length, s.z),
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h = round_to_layer(shaft_length + pot_thread_h(pot) - thickness - z),
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height = max(height, h + 1),
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recess = [(z > washer.y ? nut.x / cos(30) : washer.x) + 0.4, round_to_layer(nut.y + washer.y - z + layer_height), round_to_layer(pot_thread_h(pot) - z - thickness + 2 * layer_height)],
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flat_d = s.y + 0.06,
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flat_h = min(s[3], shaft_length)
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)
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knob(name = str(pot[0], "_knob"),
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top_d = top_d,
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bot_d = bot_d,
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height = height,
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corner_r = corner_r,
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skirt = skirt,
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pointer = pointer,
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shaft_d = s.x,
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shaft_length = h,
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flat_d = flat_d,
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flat_h = flat_h,
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recess = recess);
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function knob_screw_z(type) = knob_shaft_len(type) - knob_flat_h(type) / 2;
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module knob(type, supports = true) { //! Generate the STL for a knob
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r_top = knob_top_d(type) / 2;
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r_bot = knob_bot_d(type) / 2;
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h = knob_height(type);
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r = knob_corner_r(type);
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sr = knob_shaft_d(type) / 2 + clearance;
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top_wall = h - knob_shaft_len(type);
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fr = knob_flat_d(type) - sr + 2 * clearance;
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fh = knob_flat_h(type);
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screw = knob_screw(type);
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skirt = knob_skirt(type);
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recess = knob_recess(type);
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pointer = knob_pointer(type);
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stl(knob_name(type))
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{
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difference() {
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union() {
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rotate_extrude() {
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rounded_polygon([
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[0, h, 0],
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[r_top - r, h - r, r],
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[r_bot, 0, 0],
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[0, 0, 0],
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]);
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if(skirt)
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square([skirt.x / 2, skirt.y]);
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}
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if(pointer)
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linear_extrude(pointer.z)
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rotate(-90)
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hull() {
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translate([pointer.x, 0])
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square([eps, pointer.y[0]], center = true);
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translate([r_bot, 0])
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square([eps, pointer.y[1]], center = true);
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}
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}
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shaft_z = recess ? recess.z + (supports ? layer_height : -eps) : -eps;
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translate_z(shaft_z) {
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h = h - top_wall - shaft_z;
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linear_extrude(h)
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difference() {
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poly_circle(sr);
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translate([-sr, fr])
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square([2 * sr, sr]);
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}
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if(h > fh)
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poly_cylinder(sr, round_to_layer(h - fh), center = false);
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}
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if(recess)
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translate_z(-eps)
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hull() {
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poly_cylinder(r = recess.x / 2, h = recess.y + eps, center = false);
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linear_extrude(recess.z + eps)
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offset(min(-(recess.z - recess.y), 0))
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poly_circle(recess.x / 2);
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}
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if(screw)
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translate_z(knob_screw_z(type))
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rotate([90, 0, 180])
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teardrop_plus(r = screw_pilot_hole(screw), h = max(r_top, r_bot) + eps, center = false);
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}
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}
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}
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//! Knob with grub screw in place
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module knob_assembly(type) explode(40, explode_children = true) { //! Assembly with the grub screw in place
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fr = knob_flat_d(type) - knob_shaft_d(type) / 2;
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r_top = knob_top_d(type) / 2;
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r_bot = knob_bot_d(type) / 2;
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screw_length = screw_shorter_than(min(r_top, r_bot) - fr);
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stl_colour(pp1_colour) render() knob(type, supports = false);
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translate([0, (fr + screw_length), knob_screw_z(type)])
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rotate([90, 0, 180])
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screw(knob_screw(type), screw_length);
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}
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93
readme.md
93
readme.md
@ -35,18 +35,18 @@ A list of changes classified as breaking, additions or fixes is maintained in [C
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<tr><td> <a href = "#Cable_strips">Cable_strips</a> </td><td> <a href = "#Microswitches">Microswitches</a> </td><td> <a href = "#Sheets">Sheets</a> </td><td> <a href = "#Flat_hinge">Flat_hinge</a> </td><td> <a href = "#Offset">Offset</a> </td><td></td></tr>
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<tr><td> <a href = "#Cameras">Cameras</a> </td><td> <a href = "#Microview">Microview</a> </td><td> <a href = "#Spades">Spades</a> </td><td> <a href = "#Foot">Foot</a> </td><td> <a href = "#Quadrant">Quadrant</a> </td><td></td></tr>
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<tr><td> <a href = "#Circlips">Circlips</a> </td><td> <a href = "#Modules">Modules</a> </td><td> <a href = "#Spools">Spools</a> </td><td> <a href = "#Handle">Handle</a> </td><td> <a href = "#Round">Round</a> </td><td></td></tr>
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<tr><td> <a href = "#Components">Components</a> </td><td> <a href = "#Nuts">Nuts</a> </td><td> <a href = "#Springs">Springs</a> </td><td> <a href = "#PCB_mount">PCB_mount</a> </td><td> <a href = "#Rounded_cylinder">Rounded_cylinder</a> </td><td></td></tr>
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<tr><td> <a href = "#DIP">DIP</a> </td><td> <a href = "#O_ring">O_ring</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</a> </td><td> <a href = "#PSU_shroud">PSU_shroud</a> </td><td> <a href = "#Rounded_polygon">Rounded_polygon</a> </td><td></td></tr>
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<tr><td> <a href = "#D_connectors">D_connectors</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Swiss_clips">Swiss_clips</a> </td><td> <a href = "#Pocket_handle">Pocket_handle</a> </td><td> <a href = "#Rounded_triangle">Rounded_triangle</a> </td><td></td></tr>
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<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td> <a href = "#Press_fit">Press_fit</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
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<tr><td> <a href = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
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<tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#Printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
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<tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
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<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#Pillow_blocks">Pillow_blocks</a> </td><td> <a href = "#Washers">Washers</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Wire">Wire</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Potentiometers">Potentiometers</a> </td><td> <a href = "#Zipties">Zipties</a> </td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td></td><td></td><td></td><td></td></tr>
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<tr><td> <a href = "#Components">Components</a> </td><td> <a href = "#Nuts">Nuts</a> </td><td> <a href = "#Springs">Springs</a> </td><td> <a href = "#Knob">Knob</a> </td><td> <a href = "#Rounded_cylinder">Rounded_cylinder</a> </td><td></td></tr>
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<tr><td> <a href = "#DIP">DIP</a> </td><td> <a href = "#O_ring">O_ring</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</a> </td><td> <a href = "#PCB_mount">PCB_mount</a> </td><td> <a href = "#Rounded_polygon">Rounded_polygon</a> </td><td></td></tr>
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<tr><td> <a href = "#D_connectors">D_connectors</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Swiss_clips">Swiss_clips</a> </td><td> <a href = "#PSU_shroud">PSU_shroud</a> </td><td> <a href = "#Rounded_triangle">Rounded_triangle</a> </td><td></td></tr>
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<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td> <a href = "#Pocket_handle">Pocket_handle</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
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<tr><td> <a href = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Press_fit">Press_fit</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
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<tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
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<tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#Printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
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<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#Pillow_blocks">Pillow_blocks</a> </td><td> <a href = "#Washers">Washers</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Wire">Wire</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Potentiometers">Potentiometers</a> </td><td> <a href = "#Zipties">Zipties</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td></td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
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</table>
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---
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@ -5289,6 +5289,75 @@ Printed handle that can be printed without needing support material due to its t
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| 1 | handle_assembly |
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<a href="#top">Top</a>
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---
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<a name="Knob"></a>
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## Knob
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Parametric knobs for potentiometers and encoders.
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A knob can be constructed by specififying all the parameters or the potentiometer can be specified to customise it for its shaft with a recess to clear the nut, washer and thread.
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An optional skirt and / or a pointer can be specified.
|
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The STL includes a support membrane that needs to be cut out and a thread needs to be tapped for the grub screw.
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[printed/knob.scad](printed/knob.scad) Implementation.
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[tests/knob.scad](tests/knob.scad) Code for this example.
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### Properties
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| Function | Description |
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|:--- |:--- |
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| `knob_bot_d(type)` | Diameter at the bottom |
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| `knob_corner_r(type)` | Rounded top corner |
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| `knob_flat_d(type)` | The shaft diameter at the flat |
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| `knob_flat_h(type)` | The length of the flat |
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| `knob_height(type)` | Height |
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| `knob_name(type)` | Name for the stl maker |
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| `knob_pointer(type)` | None |
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| `knob_recess(type)` | Recess diameter and thickness to clear nut and thread, diameter, nut height, thread height |
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| `knob_screw(type)` | The grub screw type |
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| `knob_shaft_d(type)` | Shaft diameter |
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| `knob_shaft_len(type)` | Shaft length |
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| `knob_skirt(type)` | Skirt diameter and thickness |
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| `knob_top_d(type)` | Diameter at the top |
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### Functions
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| Function | Description |
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|:--- |:--- |
|
||||
| `knob(name = "knob", top_d = 12, bot_d = 15, height = 18, shaft_length, skirt = [20, 2], pointer = false, corner_r = 2, screw = M3_grub_screw, shaft_d, flat_d, flat_h, recess)` | Constructor |
|
||||
| `knob_for_pot(pot, thickness, z = 1, shaft_length = undef, top_d = 12, bot_d = 15, skirt = [20, 2], pointer = false, corner_r = 2, height = 0, washer = true)` | Construct a knob to fit specified pot |
|
||||
|
||||
### Modules
|
||||
| Module | Description |
|
||||
|:--- |:--- |
|
||||
| `knob(type, supports = true)` | Generate the STL for a knob |
|
||||
| `knob_assembly(type) explode(40, explode_children = true)` | Assembly with the grub screw in place |
|
||||
|
||||
|
||||
|
||||
### Vitamins
|
||||
| Qty | Module call | BOM entry |
|
||||
| ---:|:--- |:---|
|
||||
| 1 | `potentiometer(BTT_encoder)` | BTT_encoder |
|
||||
| 1 | `potentiometer(KY_040_encoder)` | KY_040_encoder |
|
||||
| 1 | `potentiometer(imperial_pot)` | Potentiometer imperial_pot |
|
||||
| 1 | `potentiometer(imperial_pot_x2)` | Potentiometer imperial_pot_x2 |
|
||||
| 1 | `potentiometer(metric_pot)` | Potentiometer metric_pot |
|
||||
| 1 | `screw(M3_grub_screw, 4)` | Screw M3 grub x 4mm |
|
||||
| 2 | `screw(M3_grub_screw, 5)` | Screw M3 grub x 5mm |
|
||||
| 2 | `screw(M3_grub_screw, 6)` | Screw M3 grub x 6mm |
|
||||
|
||||
### Printed
|
||||
| Qty | Filename |
|
||||
| ---:|:--- |
|
||||
| 1 | BTT_encoder_knob.stl |
|
||||
| 1 | KY_040_encoder_knob.stl |
|
||||
| 1 | imperial_pot_knob.stl |
|
||||
| 1 | imperial_pot_x2_knob.stl |
|
||||
| 1 | metric_pot_knob.stl |
|
||||
|
||||
|
||||
<a href="#top">Top</a>
|
||||
|
||||
---
|
||||
|
||||
57
tests/knob.scad
Normal file
57
tests/knob.scad
Normal file
@ -0,0 +1,57 @@
|
||||
//
|
||||
// NopSCADlib Copyright Chris Palmer 2021
|
||||
// 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/>.
|
||||
//
|
||||
z = 1; // [0: 5]
|
||||
thickness = 3; // [0: 5]
|
||||
shaft_length = 10;
|
||||
|
||||
include <../utils/core/core.scad>
|
||||
use <../printed/knob.scad>
|
||||
use <../utils/layout.scad>
|
||||
|
||||
include <../vitamins/potentiometers.scad>
|
||||
|
||||
knobs = [for(i = [0 : len(potentiometers) - 1]) let(p = potentiometers[i])
|
||||
knob_for_pot(p, thickness, z, shaft_length = pot_shaft(p).z > 20 ? shaft_length : undef,
|
||||
top_d = [10, 12, 20, 16, 16 ][i],
|
||||
bot_d = [10, 15, 20, 20, 20 ][i],
|
||||
skirt = [false, [20, 2], false, [27, 1.5], [27, 1.5]][i],
|
||||
pointer = [false, false, [14, [1, 5], 2], [13.5, [1, 1], 3], [13.5, [1, 3], 3]][i]
|
||||
)];
|
||||
|
||||
|
||||
module knobs(show_pot = false)
|
||||
layout([for(p = potentiometers) pot_size(p).x], 5) let(p = potentiometers[$i])
|
||||
if($preview) {
|
||||
translate_z(z)
|
||||
knob_assembly(knobs[$i]);
|
||||
|
||||
if(show_pot)
|
||||
translate_z(-thickness)
|
||||
vflip() {
|
||||
potentiometer(p, shaft_length = shaft_length);
|
||||
|
||||
translate_z(-thickness)
|
||||
pot_nut(p);
|
||||
}
|
||||
}
|
||||
else
|
||||
knob(knobs[$i]);
|
||||
|
||||
|
||||
knobs(true);
|
||||
BIN
tests/png/knob.png
Normal file
BIN
tests/png/knob.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 141 KiB |
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Reference in New Issue
Block a user