114 lines
2.9 KiB
OpenSCAD
114 lines
2.9 KiB
OpenSCAD
include <util.scad>
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stem_depth = 24;
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module brim(has_brim) {
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//brim radius. 11 ensconces normal keycap stem in normal keycap
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brim_radius = 6;
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//brim depth
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brim_depth = .3;
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if (has_brim) color([0,1,0]) cube([brim_radius, brim_radius, brim_depth]);
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}
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module cherry_stem(has_brim, slop = 0.3) {
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stem_width = 7.2 - slop * 2;
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stem_height = 5.5 - slop * 2;
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vertical_cross_width = 1.25;
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vertical_cross_length = 3.93;
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horizontal_cross_width = 1.15;
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horizontal_cross_length = 4.03;
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cross_depth = 4;
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stem = [stem_width, stem_height];
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vertical_cross = [vertical_cross_width, vertical_cross_length + slop + 12];
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horizontal_cross = [horizontal_cross_length + slop, horizontal_cross_width];
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translate([0,0,stem_inset]) {
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brim(has_brim);
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linear_extrude(height = cross_depth) {
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difference(){
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roundedSquare(stem, 1, center=true);
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off = 0;
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offset(r = off){
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square(vertical_cross + [-off * 2,-off * 2], center=true);
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square(horizontal_cross + [-off * 2,-off * 2], center=true);
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}
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}
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}
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// flared support
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// 6 and 8 are magic numbers I got from trying to make the sides of the flared part of the stem 45 degree overhangs
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translate([0,0,cross_depth]) linear_extrude(height=(stem_depth - cross_depth), scale = [6,8]){
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roundedSquare([stem_width, stem_height], 1, center=true);
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}
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}
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}
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module cherry_stem_rounded(has_brim) {
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// cross length
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cross_length = 4.4;
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//dimensions of connector
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// outer cross extra length in y
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extra_outer_cross_height = 1.0;
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// dimensions of cross
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// horizontal cross bar width
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horizontal_cross_width = 1.4;
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// vertical cross bar width
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vertical_cross_width = 1.3;
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// cross depth, stem height is 3.4mm
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cross_depth = 4;
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difference(){
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union(){
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cylinder(
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d = cross_length+extra_outer_cross_height,
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h = stem_depth
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);
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brim(has_brim);
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}
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//the cross part of the steam
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translate([0,0,(cross_depth)/2 + stem_inset]){
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cube([vertical_cross_width,cross_length,cross_depth], center=true );
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cube([cross_length,horizontal_cross_width,cross_depth], center=true );
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}
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}
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}
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module alps_stem(has_brim = false){
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cross_depth = 40;
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width = 4.45;
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height = 2.25;
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base_width = 12;
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base_height = 15;
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brim(has_brim);
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translate([0,0,cross_depth/2 + stem_inset]){
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cube([width,height,cross_depth], center = true);
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}
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}
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module filled_stem(has_brim=false) {
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// this is mostly for testing. we don't pass the size of the keycp in here
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// so we can't make this work for all keys
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cube(100, center=true);
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}
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//whole connector, alps or cherry, trimmed to fit
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module connector(stem_profile, has_brim){
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if (stem_profile == "alps") {
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alps_stem(has_brim);
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} else if (stem_profile == "cherry_rounded") {
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cherry_stem_rounded(has_brim);
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} else if (stem_profile == "cherry") {
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cherry_stem(has_brim);
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} else if (stem_profile == "filled") {
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filled_stem();
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}
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}
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