|
|
@@ -24,9 +24,7 @@
|
|
|
// Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
|
|
|
// http://creativecommons.org/licenses/by-nc-sa/4.0/
|
|
|
|
|
|
-
|
|
|
-// https://en.wikipedia.org/wiki/Tetrahedron
|
|
|
-// angle of capsule to vertical axis = atan(sqrt(2)) = 54.7356103172
|
|
|
+include <TinySpHEAR_common.scad>;
|
|
|
|
|
|
////
|
|
|
//// model parameters
|
|
|
@@ -44,7 +42,7 @@ mic_radius = 9.6;
|
|
|
// dimensions of the capsule holder connection legs
|
|
|
// a width of 4mm is too thin, 5mm prints better
|
|
|
leg_width = 5;
|
|
|
-leg_thick = 3;
|
|
|
+leg_thick = 1.75;
|
|
|
|
|
|
// wall thickness of the capsule holder
|
|
|
wall = 1;
|
|
|
@@ -54,15 +52,16 @@ wall = 1;
|
|
|
ridge_width = 2.0;
|
|
|
ridge_slot_width = 2.0;
|
|
|
// add to the thickness of ridges
|
|
|
-ridge_fit = 0.1;
|
|
|
+ridge_wfit = 0.1;
|
|
|
+ridge_hfit = 3;
|
|
|
|
|
|
// dimensions of microphone mount
|
|
|
-mount_radius = 4.0;
|
|
|
+mount_radius = 3.5;
|
|
|
mount_wall = 0.75;
|
|
|
|
|
|
// height and eccentricity of top connector
|
|
|
mount_top_height = 15.0;
|
|
|
-mount_top_eccentricity = 1.25;
|
|
|
+mount_top_eccentricity = 1.3;
|
|
|
|
|
|
// height of mount
|
|
|
mount_height = 40;
|
|
|
@@ -111,246 +110,29 @@ ridges = 1;
|
|
|
//// end of rendering control
|
|
|
////
|
|
|
|
|
|
-// elevation angle for the capsule holders (fixed for this microphone)
|
|
|
-elev_angle = atan(sqrt(1/2));
|
|
|
-
|
|
|
-// angles of the connection legs and adjacent capsule holders
|
|
|
-leg_angles_top =
|
|
|
- [
|
|
|
- [-120, elev_angle],
|
|
|
- [0, elev_angle],
|
|
|
- [120, elev_angle]
|
|
|
- ];
|
|
|
-
|
|
|
-leg_angles_bot =
|
|
|
- [
|
|
|
- [-120, elev_angle],
|
|
|
- [120, elev_angle]
|
|
|
- ];
|
|
|
-
|
|
|
// adjustment for the inner radius of the capsule holder
|
|
|
// measured inside diameter of a trial print was around 7.5 to 8.2
|
|
|
// instead of 10, capsule diameter was 9.99)
|
|
|
-fudge = 0.15;
|
|
|
+fudge = 0.08;
|
|
|
|
|
|
// adjustment for fit of slots in connection legs and mount
|
|
|
-fit = 0.1;
|
|
|
+// 0.1: initial setting
|
|
|
+// 0.1 ->0.2: Ultimaker 2 + Extended plus APL (2016.06.10)
|
|
|
+fit = 0.15;
|
|
|
|
|
|
// number of facets for rendering cylinders
|
|
|
facets = 64;
|
|
|
-
|
|
|
-// microphone structure geometry
|
|
|
-capsule_sep_min = (mic_radius - capsule_height) * cos(elev_angle) - (capsule_radius + wall) * sin(elev_angle);
|
|
|
-capsule_sep_max = mic_radius * cos(elev_angle) - (capsule_radius + wall) * sin(elev_angle);
|
|
|
-capsule_bottom = mic_radius * sin(elev_angle) + (capsule_radius + wall) * cos(elev_angle);
|
|
|
-mount_radius_capsule = capsule_sep_max;
|
|
|
-
|
|
|
-////////
|
|
|
-// microphone capsule holder
|
|
|
-
|
|
|
-// azimuth: horizontal orientation of the capsule
|
|
|
-// elevation: vertical orientation of the capsule
|
|
|
-// mounts: vectors containing the angle of the mount and the angle to the adjacent capsule
|
|
|
-// twist: rotate the whole capsule to match mounting legs
|
|
|
-// ridge: add 0, 1 or 2 ridges for attaching the structure to the mount
|
|
|
-// ridge_fit: tune the fit, used for carving slots in mount
|
|
|
-// solid: make the capsule holder solid, used in the mount code to carve the capsule rests
|
|
|
-
|
|
|
-module capsule (azimuth, elevation, mounts, twist, ridge, ridge_fit = 0.0, solid = 0) {
|
|
|
- rotate([0, 0, azimuth]) {
|
|
|
- rotate([0, (90 - elevation), 0]) {
|
|
|
- translate([0, 0, (rendermic == 0 && solid == 0) ? 0 : mic_radius - capsule_height]) {
|
|
|
- difference () {
|
|
|
- union () {
|
|
|
- // main capsule holder
|
|
|
- cylinder(r = capsule_radius + wall, h = capsule_height, $fn = facets);
|
|
|
- // the mounting legs
|
|
|
- for (angles = mounts) {
|
|
|
- rotate([0, 0, angles[0] + twist]) {
|
|
|
- // connect with cylindrical beams, very pretty
|
|
|
- if (connect == 0) {
|
|
|
- leg_length = mic_radius * cos(angles[1]) - capsule_radius * sin(angles[1]);
|
|
|
- translate([capsule_radius - wall, 0, capsule_height - wall]) {
|
|
|
- rotate([0, 180 - angles[1], 0]) {
|
|
|
- cylinder(d = leg_width, h = leg_length - 0.3, center = false, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- // connect with horizontal legs
|
|
|
- if (connect == 1) {
|
|
|
- leg_length = (mic_radius - capsule_height + leg_thick) * tan(90 - angles[1]) - capsule_radius;
|
|
|
- slot_depth = leg_thick * cos(90 - 2 * angles[1]) + wall + fit;
|
|
|
- translate([capsule_radius + leg_length + fudge, - leg_width / 3, 0]) {
|
|
|
- rotate([0, -90, 0]) {
|
|
|
- difference() {
|
|
|
- // thickness, width
|
|
|
- cube([leg_thick, leg_width, leg_length]);
|
|
|
- // cut slot in connector
|
|
|
- translate([0, leg_width / 3 - (fit / 2), 0]) {
|
|
|
- cube([leg_thick, leg_width / 3 + fit, slot_depth]);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- // connect with vertical legs
|
|
|
- if (connect == 2) {
|
|
|
- // fix this 0.2 == (2 * fudge?)
|
|
|
- leg_length = (mic_radius * tan(90 - angles[1]) - capsule_radius) * tan(angles[1]) - 0.2;
|
|
|
- slot_depth = leg_thick * cos (90 - (2 * angles[1]));
|
|
|
- translate([capsule_radius - leg_thick / 2 + fudge, - leg_width / 3,
|
|
|
- - leg_length + capsule_height]) {
|
|
|
- difference() {
|
|
|
- // the connection
|
|
|
- difference() {
|
|
|
- cube([leg_thick + leg_thick / 2, leg_width, leg_length]);
|
|
|
- translate([-leg_thick + wall - fudge, 0, - capsule_height + fudge]) {
|
|
|
- cube([leg_thick, leg_width, leg_length]);
|
|
|
- }
|
|
|
- }
|
|
|
- // cut slot in connector
|
|
|
- translate([0, leg_width / 3 - (fit / 2), 0]) {
|
|
|
- cube([leg_thick + leg_thick / 2, leg_width / 3 + fit, slot_depth]);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- // add ridges for microphone mount
|
|
|
- ridge_length = (mic_radius - capsule_height) / tan(elev_angle) - (capsule_radius + wall);
|
|
|
- if (ridge == 2) {
|
|
|
- rotate([0, 0, twist]) {
|
|
|
- translate([capsule_radius + wall - ridge_length / 2, (ridge_width - ridge_fit) / 2, 0]) {
|
|
|
- cube([ridge_length * 3 / 2, ridge_width - ridge_fit, capsule_height], center = false);
|
|
|
- }
|
|
|
- translate([capsule_radius + wall - ridge_length / 2, - (ridge_width - ridge_fit) * 3 / 2, 0]) {
|
|
|
- cube([ridge_length * 3 / 2, ridge_width - ridge_fit, capsule_height], center = false);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- if (ridge == 1) {
|
|
|
- rotate([0, 0, twist]) {
|
|
|
- translate([capsule_radius + wall - ridge_length / 2, - (ridge_width - ridge_fit) / 2, 0]) {
|
|
|
- cube([ridge_length * 3 / 2, ridge_width - ridge_fit, capsule_height], center = false);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- // make the hole for the capsule (also cuts leg overhang for vertical connectors)
|
|
|
- if (solid != 1) {
|
|
|
- translate ([0, 0, -capsule_height]) {
|
|
|
- cylinder(r = capsule_radius + fudge, h = capsule_height * 2, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- // remove any extra connecting beam material from the face of the holder
|
|
|
- if (connect == 0) {
|
|
|
- translate ([0, 0, capsule_height]) {
|
|
|
- cylinder(r = capsule_radius + wall * 2, h = 2, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-// microphone mount
|
|
|
-//
|
|
|
-// clips into standard microphone stand
|
|
|
-//
|
|
|
-// angles: angles for mount slots
|
|
|
-// wall: thickness of cylinder wall
|
|
|
-// stand_wall: thickness of stand mount wall
|
|
|
-// separation: height of mount with respect of the microphone assembly
|
|
|
-
|
|
|
-module ellipsoid(height, rad_bot, rad_top, eccentricity) {
|
|
|
- linear_extrude(height = height, scale = [eccentricity, rad_top / rad_bot]) {
|
|
|
- circle(r = rad_bot, $fn = facets);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-module mount (angles, wall, stand_wall, separation) {
|
|
|
- translate([0, 0, -separation]) {
|
|
|
- difference() {
|
|
|
- union() {
|
|
|
- // conic section
|
|
|
- translate([0, 0, mic_mount_height + mount_height]) {
|
|
|
- rotate([0, 0, 45]) {
|
|
|
- difference() {
|
|
|
- ellipsoid(mount_top_height, mount_radius + wall, mount_radius_capsule, mount_top_eccentricity);
|
|
|
- ellipsoid(mount_top_height, mount_radius, mount_radius_capsule * 0.5, mount_top_eccentricity * 1.05);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- // stalk
|
|
|
- translate([0, 0, mic_mount_height + mount_height * 2/3]) {
|
|
|
- difference() {
|
|
|
- cylinder(r = mount_radius + wall, h = mount_height / 3, $fn = facets);
|
|
|
- // make the hole for the mount
|
|
|
- cylinder(r = mount_radius, h = mount_height / 3, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- // transition to stand mount
|
|
|
- translate([0, 0, mic_mount_height]) {
|
|
|
- difference() {
|
|
|
- cylinder(r2 = mount_radius + wall, r1 = mic_mount_radius + mic_mount_fit + stand_wall,
|
|
|
- h = mount_height * 2 / 3, $fn = facets);
|
|
|
- // make the hole for the mount
|
|
|
- cylinder(r2 = mount_radius, r1 = mic_mount_radius + mic_mount_fit,
|
|
|
- h = mount_height * 2 / 3, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- // stand mount
|
|
|
- translate([0, 0, 0]) {
|
|
|
- difference() {
|
|
|
- union() {
|
|
|
- // main mount cylinder
|
|
|
- translate([0, 0, 0]) {
|
|
|
- difference() {
|
|
|
- cylinder(r = mic_mount_radius + mic_mount_fit + stand_wall, h = mic_mount_height, $fn = facets);
|
|
|
- // make the hole for the mount (* 1.5 to cut the ridge as well)
|
|
|
- cylinder(r = mic_mount_radius + mic_mount_fit, h = mic_mount_height, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- // slot for fitting into microphone stand
|
|
|
- translate([mic_mount_radius - stand_wall / 2, - mic_mount_slot_width / 2, 0]) {
|
|
|
- cube([2 * stand_wall, mic_mount_slot_width, mic_mount_slot_height]);
|
|
|
- }
|
|
|
- // eyelet for microphone stand
|
|
|
- translate([mic_mount_radius - stand_wall / 2, 0, mic_mount_slot_height]) {
|
|
|
- rotate([0, 90, 0]) {
|
|
|
- cylinder(r = mic_mount_slot_radius, h = 2 * stand_wall, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- // hole for microphone wiring
|
|
|
- translate([mic_mount_radius - stand_wall / 2, 0, mic_mount_height - mic_wire_hole_offset]) {
|
|
|
- rotate([0, 90, 0]) {
|
|
|
- cylinder(r = mic_wire_hole_radius, h = 2 * stand_wall, $fn = facets);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- // indentations that match the two lower capsule holders
|
|
|
- translate([0, 0, mic_mount_height + mount_height + mount_top_height +
|
|
|
- (mic_radius - capsule_height) + capsule_height * sin(elev_angle)]) {
|
|
|
- capsule(angles[0], -elev_angle, [], 0, 1, 0.1, 1);
|
|
|
- capsule(angles[1], -elev_angle, [], 0, 1, 0.1, 1);
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
+// render capsule holders with better resolution
|
|
|
+cfacets = 128;
|
|
|
|
|
|
// render a complete microphone
|
|
|
|
|
|
if (rendermic == 1) {
|
|
|
// all four capsules
|
|
|
- capsule(45, elev_angle, leg_angles_top, 60, 0, 0.0, 0);
|
|
|
- capsule(-135, elev_angle, leg_angles_top, 60, 0, 0.0, 0);
|
|
|
- capsule(-45, -elev_angle, leg_angles_bot, 0, 1, 0.0, 0);
|
|
|
- capsule(135, -elev_angle, leg_angles_bot, 0, 1, 0.0, 0);
|
|
|
+ capsule(45, elev_angle, leg_angles_top, 60, 0, 0.0, 0.0, 0);
|
|
|
+ capsule(-135, elev_angle, leg_angles_top, 60, 0, 0.0, 0.0, 0);
|
|
|
+ capsule(-45, -elev_angle, leg_angles_bot, 0, 1, 0.0, 0.0, 0);
|
|
|
+ capsule(135, -elev_angle, leg_angles_bot, 0, 1, 0.0, 0.0, 0);
|
|
|
// the mount
|
|
|
mount([-45, 135], mount_wall, mic_mount_wall, mic_mount_height + mount_top_height + mount_height + capsule_bottom);
|
|
|
}
|
|
|
@@ -366,13 +148,13 @@ if (rendermic == 0) {
|
|
|
*translate([part_sep, -part_sep, part_height]) { capsule(0, part_rot, leg_angles_top, 60, 0); }
|
|
|
if (renderset != 0) {
|
|
|
// #4
|
|
|
- *translate([part_sep, part_sep, part_height]) { capsule(0, part_rot, leg_angles_top, 60, 0); }
|
|
|
+ translate([part_sep, part_sep, part_height]) { capsule(0, part_rot, leg_angles_top, 60, 0); }
|
|
|
// #2
|
|
|
*translate([-part_sep, part_sep, part_height]) { capsule(0, part_rot, leg_angles_bot, -90, 1); }
|
|
|
// #1
|
|
|
*translate([-part_sep, -part_sep, part_height]) { capsule(0, part_rot, leg_angles_bot, 90, 1); }
|
|
|
// mount body
|
|
|
- translate([0, 0, 0]) { mount([-45, 135], mount_wall, mic_mount_wall, 0); }
|
|
|
+ *translate([0, 0, 0]) { mount([-45, 135], mount_wall, mic_mount_wall, 0); }
|
|
|
// add connecting ridges to make it all one part
|
|
|
*difference() {
|
|
|
for (rot_a = [-45, 45]) {
|
|
|
@@ -383,7 +165,7 @@ if (rendermic == 0) {
|
|
|
}
|
|
|
}
|
|
|
// remove them in the inside of the mount
|
|
|
- cylinder(r = mount_radius + wall / 2, h = wall / 2);
|
|
|
+ *cylinder(r = mount_radius + wall / 2, h = wall / 2);
|
|
|
}
|
|
|
}
|
|
|
} else {
|
Fernando Pablo Lopez-Lezcano