3DPrinting/KeyV2
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buncha stuff

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add G20 keycap, experimental minkowski_key function, more work on ISO
enter, added keytop_thickness and wall_thickness, fixed bugs with length
and keytop thickness, arbitrary key heights, and did some refactoring.
This commit is contained in:
Bob - Home - Windows 2016-09-04 02:35:44 -04:00
parent c1c166d9dc
commit 4bb5913107
1 changed files with 231 additions and 201 deletions

432
key.scad
View file

@ -1,28 +1,19 @@
/* [Hidden] */
//change to round things better
$fn = 64;
unit = 19.05;
//scale of inner to outer shape
key_wall_thickness_width = .8;
key_wall_thickness_height = .8;
key_wall_thickness_depth = .8;
/* [Key] */ /* [Key] */
//length in units of key //length in units of key
key_length = 1; key_length = 1;
//height in units of key. should remain 1 for most uses
key_height = 1;
//keycap type, [0:DCS Row 5, 1:DCS Row 1, 2:DCS Row 2, 3:DCS Row 3, 4:DCS Row 4, 5:DSA Row 3, 6:SA Row 1, 7:SA Row 2, 8:SA Row 3, 9:SA Row 4, 10:DCS Row 4 Spacebar, 11: g20 key (faked)]
key_profile_index = 0;
// keytop thickness, aka how many millimeters between the inside and outside of the top surface of the key
keytop_thickness = 1;
//keycap type, [0:DCS Row 5, 1:DCS Row 1, 2:DCS Row 2, 3:DCS Row 3, 4:DCS Row 4, 5:DSA Row 3, 6:SA Row 1, 7:SA Row 2, 8:SA Row 3, 9:SA Row 4, 10:DCS Row 4 Spacebar] // wall thickness, aka the thickness of the sides of the keycap. note this is the total thickness, aka 3 = 1.5mm walls
key_profile = 0; wall_thickness = 3;
/* [Brim] */ /* [Brim] */
//connector brim
//enable brim for connector //enable brim for connector
has_brim = 0; has_brim = 0;
//brim radius. 11 ensconces normal keycap stem in normal keycap //brim radius. 11 ensconces normal keycap stem in normal keycap
@ -30,33 +21,33 @@ brim_radius = 11;
//brim depth //brim depth
brim_depth = .3; brim_depth = .3;
/* [Stabilizers] */ /* [Stabilizers] */
//whether stabilizer connectors are enabled //whether stabilizer connectors are enabled
stabilizers = 0; stabilizers = 0;
//stabilizer distance in mm //stabilizer distance in mm
stabilizer_distance = 50; stabilizer_distance = 50;
/* [Dish] */ /* [Dish] */
// invert dishing. mostly for spacebar // invert dishing. mostly for spacebar
inverted_dish = 0; inverted_dish = 0;
/* [Stem] */ /* [Stem] */
// cherry MX or Alps stem, or totally broken circular cherry stem [0..2] // cherry MX or Alps stem, or totally broken circular cherry stem [0..2]
stem_profile = 0; stem_profile = 0;
// how inset the stem is from the bottom of the key. experimental. requires support // how inset the stem is from the bottom of the key. experimental. requires support
stem_inset = 0; stem_inset = 0;
// stem offset in units NOT MM. for stepped caps lock // stem offset in units NOT MM. for stepped caps lock
stem_offset = 0; stem_offset = 0;
/* [Hidden] */
//change to round things better
$fn = 32;
//beginning to use unit instead of baked in 19.05
unit = 19.05;
//minkowski radius. radius of sphere used in minkowski sum for minkowski_key function
minkowski_radius = 1;
//profile specific stuff //profile specific stuff
/* /*
@ -261,8 +252,65 @@ key_profiles = [
0, // Dish Skew X 0, // Dish Skew X
0 // DIsh Skew Y 0 // DIsh Skew Y
], ],
[ //G20 AKA DCS Row 2 with no dish and shorter
18.16, // Bottom Key Width
18.16, // Bottom Key Height
4, // Top Key Width Difference
4, // Top Key Height Difference
6, // total Depth
3, // Top Tilt
1.75,// Top Skew
//Dish Profile
3, // Dish Type
0, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //NONWORKING fake ISO enter
18.16 * 1.5, // Bottom Key Width
18.16 * 2, // Bottom Key Height
4, // Top Key Width Difference
4, // Top Key Height Difference
7, // total Depth
0, // Top Tilt
1.75,// Top Skew
//Dish Profile
0, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
]; ];
// derived variables
//key profile selected
key_profile = key_profiles[key_profile_index];
// names, so I don't go crazy
bottom_key_width = key_profile[0];
bottom_key_height = key_profile[1];
width_difference = key_profile[2];
height_difference = key_profile[3];
total_depth = key_profile[4];
top_tilt = key_profile[5] / key_height;
top_skew = key_profile[6];
dish_type = key_profile[7];
dish_depth = key_profile[8];
dish_skew_x = key_profile[9];
dish_skew_y = key_profile[10];
// actual mm key width and height
total_key_width = bottom_key_width + (unit * (key_length - 1));
total_key_height = bottom_key_height + (unit * (key_height - 1));
// actual mm key width and height at the top
top_total_key_width = bottom_key_width + (unit * (key_length - 1)) - width_difference;
top_total_key_height = bottom_key_height + (unit * (key_height - 1)) - height_difference;
//centered //centered
module roundedRect(size, radius) { module roundedRect(size, radius) {
x = size[0]; x = size[0];
@ -286,23 +334,27 @@ module roundedRect(size, radius) {
} }
} }
//bottom we can use to anchor things // stem related stuff
module inside(key_profile)
{
difference(){
translate([0,0,50])
cube([100,100,100],center=true);
translate([0,0,-.1]) // bottom we can use to anchor the stem, just a big ol cube with the inside of
shape(key_profile, 3); // the keycap hollowed out
module inside(){
difference(){
translate([0,0,50]) cube([100000,100000,100000],center=true);
// NOTE: you're saying hey, if this is the inside why aren't we doing
// wall_thickness, keytop_thickness? well first off congratulations for
// figuring that out cuz it's a rat's nest in here. second off
// due to how the minkowski_key function works that isn't working out right
// now. it's a simple change if is_minkowski is implemented though
shape(0, 0);
} }
} }
module cherry_stem(){ module cherry_stem(){
// cross length // cross length
cross_length = 4.4; cross_length = 4.4;
//extra vertical cross length - the extra length of the up/down bar of the cross //extra vertical cross length - the extra length of the up/down bar of the cross
extra_vertical_cross_length = 1.1; extra_vertical_cross_length = 1.1;
//dimensions of connector //dimensions of connector
// outer cross extra length in x // outer cross extra length in x
extra_outer_cross_width = 2.10; extra_outer_cross_width = 2.10;
@ -353,14 +405,13 @@ module alps_stem(){
base_width = 12; base_width = 12;
base_height = 15; base_height = 15;
//translate([0,0,cross_depth + 50/2]) cube([base_width, base_height, 50], center=true);
translate([0,0,cross_depth/2 + stem_inset]){ translate([0,0,cross_depth/2 + stem_inset]){
cube([width,height,cross_depth], center = true); cube([width,height,cross_depth], center = true);
} }
} }
//whole connector //whole connector, alps or cherry, trimmed to fit
module connector(key_profile,has_brim){ module connector(has_brim){
difference(){ difference(){
//TODO can I really not do an array index here? //TODO can I really not do an array index here?
translate([-unit * stem_offset, 0, 0]) translate([-unit * stem_offset, 0, 0])
@ -368,108 +419,91 @@ module connector(key_profile,has_brim){
if(stem_profile == 0 || stem_profile == 2) cherry_stem(); if(stem_profile == 0 || stem_profile == 2) cherry_stem();
if(stem_profile == 1) alps_stem(); if(stem_profile == 1) alps_stem();
} }
inside(key_profile); inside();
} }
} }
//stabilizer connectors //stabilizer connectors
module stabilizer_connectors(key_profile,has_brim){ module stabilizer_connectors(has_brim){
translate([stabilizer_distance,0,0]) connector(key_profile, has_brim); translate([stabilizer_distance,0,0]) connector(has_brim);
translate([-stabilizer_distance,0,0]) connector(key_profile, has_brim); translate([-stabilizer_distance,0,0]) connector(has_brim);
} }
//i h8 u scad
module shape(key_profile, thickness){
bottom_key_width = key_profile[0] ;
bottom_key_height = key_profile[1];
top_key_width_difference = key_profile[2];
top_key_height_difference = key_profile[3];
total_depth = key_profile[4] - thickness;
top_tilt = key_profile[5];
top_skew = key_profile[6];
if (inverted_dish == 1){ //shape related stuff
//general shape of key. used for inside and outside
module shape(thickness_difference, depth_difference){
if (inverted_dish == 1){
difference(){ difference(){
union(){ union(){
shape_hull(key_profile, thickness, 1); shape_hull(thickness_difference, depth_difference, 1);
dish(key_profile, thickness); dish(depth_difference);
} }
outside(key_profile, thickness); outside(thickness_difference);
} }
} } else{
else{
difference(){ difference(){
shape_hull(key_profile, thickness, 1); shape_hull(thickness_difference, depth_difference, 1);
dish(key_profile, thickness); dish(depth_difference);
} }
} }
} }
//conicalish clipping shape to trim things off the outside of the keycap // conicalish clipping shape to trim things off the outside of the keycap
// literally just a key with height of 2 to make sure nothing goes awry with dishing etc // literally just a key with height of 2 to make sure nothing goes awry with dishing etc
module outside(key_profile, thickness){ module outside(thickness_difference){
difference(){ difference(){
cube([100000,100000,100000],center = true); cube([100000,100000,100000],center = true);
shape_hull(key_profile, thickness, 2); shape_hull(thickness_difference, 0, 2);
} }
} }
//super basic hull shape without dish // super basic hull shape without dish
module shape_hull(key_profile, thickness, modifier){ // modifier multiplies the height and top differences of the shape,
bottom_key_width = key_profile[0] ; // which is only used for dishing to cut the dish off correctly
bottom_key_height = key_profile[1]; // height_difference used for keytop thickness
top_key_width_difference = key_profile[2]; module shape_hull(thickness_difference, depth_difference, modifier){
top_key_height_difference = key_profile[3];
total_depth = key_profile[4] - thickness;
top_tilt = key_profile[5];
top_skew = key_profile[6];
hull(){ hull(){
roundedRect([bottom_key_width*key_length - thickness,bottom_key_height - thickness,.001],1.5); // bottom_key_width + (key_length -1) * unit is the correct length of the
// key. only 1u of the key should be bottom_key_width long; all others
// should be 1u
roundedRect([total_key_width - thickness_difference, total_key_height - thickness_difference, .001],1.5);
translate([0,top_skew,total_depth * modifier]) //height_difference outside of modifier because that doesnt make sense
translate([0,top_skew,total_depth * modifier - depth_difference])
rotate([-top_tilt,0,0]) rotate([-top_tilt,0,0])
roundedRect([bottom_key_width*key_length - thickness -top_key_width_difference * modifier,bottom_key_height - thickness -top_key_height_difference * modifier,.001],1.5); roundedRect([total_key_width - thickness_difference - width_difference * modifier, total_key_height - thickness_difference - height_difference * modifier, .001],1.5);
} }
} }
//dish related stuff
//dish selector //dish selector
module dish(key_profile){ //this thing is a monster module dish(depth_difference){
dish_type = key_profile[7];
if(dish_type == 0){ // cylindrical dish if(dish_type == 0){ // cylindrical dish
cylindrical_dish(key_profile); cylindrical_dish(depth_difference);
} }
else if (dish_type == 1) { // spherical dish else if (dish_type == 1) { // spherical dish
spherical_dish(key_profile); spherical_dish(depth_difference);
} }
else if (dish_type == 2){ // SIDEWAYS cylindrical dish - used for spacebar else if (dish_type == 2){ // SIDEWAYS cylindrical dish - used for spacebar
sideways_cylindrical_dish(key_profile); sideways_cylindrical_dish(depth_difference);
} }
else if (dish_type == 3){ else if (dish_type == 3){
// no dish // no dish
} }
} }
module cylindrical_dish(key_profile){ module cylindrical_dish(depth_difference){
// names, so I don't go crazy
total_key_width = key_profile[0];
total_key_height = key_profile[1];
width_difference = key_profile[2];
height_difference = key_profile[3];
total_depth = key_profile[4];
top_tilt = key_profile[5];
top_skew = key_profile[6];
dish_type = key_profile[7];
dish_depth = key_profile[8];
dish_skew_x = key_profile[9];
dish_skew_y = key_profile[10];
//dependant variables
key_width = total_key_width * key_length - width_difference;
key_height = total_key_height - height_difference;
/* we do some funky math here /* we do some funky math here
* basically you want to have the dish "dig in" to the keycap x millimeters * basically you want to have the dish "dig in" to the keycap x millimeters
* in order to do that you have to solve a small (2d) system of equations * in order to do that you have to solve a small (2d) system of equations
@ -477,18 +511,18 @@ module cylindrical_dish(key_profile){
* the width of the keycap. * the width of the keycap.
*/ */
// the distance you have to move the dish up so it digs in dish_depth millimeters // the distance you have to move the dish up so it digs in dish_depth millimeters
chord_length = (pow(key_width, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth); chord_length = (pow(top_total_key_width, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
//the radius of the dish //the radius of the dish
rad = (pow(key_width, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth); rad = (pow(top_total_key_width, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){ if (inverted_dish == 1){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) translate([dish_skew_x, top_skew + dish_skew_y, total_depth - depth_difference])
rotate([90-top_tilt,0,0]) rotate([90-top_tilt,0,0])
translate([0,-chord_length,0]) translate([0,-chord_length,0])
cylinder(h=100,r=rad, $fn=1024, center=true); cylinder(h=100,r=rad, $fn=1024, center=true);
} }
else{ else{
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) translate([dish_skew_x, top_skew + dish_skew_y, total_depth - depth_difference])
rotate([90-top_tilt,0,0]) rotate([90-top_tilt,0,0])
translate([0,chord_length,0]) translate([0,chord_length,0])
cylinder(h=100,r=rad, $fn=1024, center=true); cylinder(h=100,r=rad, $fn=1024, center=true);
@ -496,26 +530,9 @@ module cylindrical_dish(key_profile){
} }
module spherical_dish(key_profile){ module spherical_dish(depth_difference){
// names, so I don't go crazy
total_key_width = key_profile[0];
total_key_height = key_profile[1];
width_difference = key_profile[2];
height_difference = key_profile[3];
total_depth = key_profile[4];
top_tilt = key_profile[5];
top_skew = key_profile[6];
dish_type = key_profile[7];
dish_depth = key_profile[8];
dish_skew_x = key_profile[9];
dish_skew_y = key_profile[10];
//dependant variables
key_width = total_key_width * key_length - width_difference;
key_height = total_key_height - height_difference;
//same thing as the cylindrical dish here, but we need the corners to just touch - so we have to find the hypotenuse of the top //same thing as the cylindrical dish here, but we need the corners to just touch - so we have to find the hypotenuse of the top
chord = pow((pow(key_width,2) + pow(key_height, 2)),0.5); //getting diagonal of the top chord = pow((pow(top_total_key_width,2) + pow(top_total_key_height, 2)),0.5); //getting diagonal of the top
// the distance you have to move the dish up so it digs in dish_depth millimeters // the distance you have to move the dish up so it digs in dish_depth millimeters
chord_length = (pow(chord, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth); chord_length = (pow(chord, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
@ -523,99 +540,120 @@ module spherical_dish(key_profile){
rad = (pow(chord, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth); rad = (pow(chord, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){ if (inverted_dish == 1){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) translate([dish_skew_x, top_skew + dish_skew_y, total_depth - depth_difference])
rotate([-top_tilt,0,0]) rotate([-top_tilt,0,0])
translate([0,0,-chord_length]) translate([0,0,-chord_length])
sphere(r=rad, $fn=256); //NOTE: if your dish is long at all you might need to increase this number
sphere(r=rad, $fn=512);
} }
else{ else{
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) translate([dish_skew_x, top_skew + dish_skew_y, total_depth - depth_difference])
rotate([-top_tilt,0,0]) rotate([-top_tilt,0,0])
translate([0,0,chord_length]) translate([0,0,chord_length])
sphere(r=rad, $fn=256); sphere(r=rad, $fn=256);
} }
} }
module sideways_cylindrical_dish(key_profile){ module sideways_cylindrical_dish(depth_difference){
// names, so I don't go crazy chord_length = (pow(top_total_key_height, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
total_key_width = key_profile[0]; rad = (pow(top_total_key_height, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
total_key_height = key_profile[1];
width_difference = key_profile[2];
height_difference = key_profile[3];
total_depth = key_profile[4];
top_tilt = key_profile[5];
top_skew = key_profile[6];
dish_type = key_profile[7];
dish_depth = key_profile[8];
dish_skew_x = key_profile[9];
dish_skew_y = key_profile[10];
//dependant variables
key_width = total_key_width * key_length - width_difference;
key_height = total_key_height - height_difference;
chord_length = (pow(key_height, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
rad = (pow(key_height, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){ if (inverted_dish == 1){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) translate([dish_skew_x, top_skew + dish_skew_y, total_depth - depth_difference])
rotate([90,top_tilt,90]) rotate([90,top_tilt,90])
translate([0,-chord_length,0]) translate([0,-chord_length,0])
cylinder(h=key_width + 20,r=rad, $fn=1024, center=true); // +20 just cuz cylinder(h=total_key_width + 20,r=rad, $fn=1024, center=true); // +20 just cuz
} }
else{ else{
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) translate([dish_skew_x, top_skew + dish_skew_y, total_depth - depth_difference])
rotate([90,top_tilt,90]) rotate([90,top_tilt,90])
translate([0,chord_length,0]) translate([0,chord_length,0])
cylinder(h=key_width + 20,r=rad, $fn=1024, center=true); cylinder(h=total_key_width + 20,r=rad, $fn=1024, center=true);
} }
} }
//actual full key with space carved out and keystem/stabilizer connectors //actual full key with space carved out and keystem/stabilizer connectors
module key(key_profile){ module key(){
union(){ union(){
difference(){ difference(){
shape(key_profile, 0); shape(0, 0);
shape(wall_thickness, keytop_thickness);
}
}
translate([0,0,-.1]) connector(has_brim);
shape(key_profile, 3);
} if (stabilizers == 1){
connector(key_profile,has_brim); stabilizer_connectors(has_brim);
if (stabilizers == 1){ }
stabilizer_connectors(key_profile,has_brim); }
// ACTUAL OUTPUT
difference(){
//key();
// preview cube, for seeing inside the keycap
//cube([100,100,100]);
}
minkowski_key();
// Experimental stuff
// key rounded with minkowski sum. still supports wall and keytop thickness.
// use in actual output section. takes a long time to render with dishes.
// required for keycap 11, G20 keycap.
module minkowski_key(){
union(){
difference(){
minkowski(){
shape(minkowski_radius*2, minkowski_radius);
difference(){
sphere(r=minkowski_radius, $fn=24);
translate([0,0,-minkowski_radius])
cube([2*minkowski_radius,2*minkowski_radius,2*minkowski_radius], center=true);
}
}
shape(wall_thickness, keytop_thickness);
} }
} }
connector(has_brim);
if (stabilizers == 1){
stabilizer_connectors(has_brim);
}
} }
// ACTUAL OUTPUT
key(key_profiles[key_profile]);
// non-implemented ISO enter test stuff
// NOT 3D, NOT CENTERED // NOT 3D, NOT CENTERED
module fakeISOEnter(){ // corollary is roundedRect
module fakeISOEnter(thickness_difference){
z = 0.001; z = 0.001;
radius = 2; radius = 2;
/*TODO I figured it out. 18.16 is the actual keycap width / height,
whereas 19.01 is the unit. ISO enter obeys that just like everything else,
which means that it's height is 18.16 * 2 + (19.01 - 18.16) or, two
keycap heights plus the space between them, also known as 18.16 +
(19.01 * (key_height - 1)). this is followed by the width too. should fix
to make this finally work*/
unit = 18.16; // TODO probably not unit = 18.16; // TODO probably not
// t is all modifications to the polygon array
t = radius + thickness_difference/2;
pointArray = [ pointArray = [
[0 + radius,0 + radius], [0 + t,0 + t],
[unit*1.25 - radius, 0 + radius], [unit*1.25 - t, 0 + t],
[unit*1.25 - radius, unit*2 - radius], [unit*1.25 - t, unit*2 - t],
[unit*-.25 + radius, unit*2 - radius], [unit*-.25 + t, unit*2 - t],
[unit*-.25 + radius, unit*1 + radius], [unit*-.25 + t, unit*1 + t],
[0 + radius, unit*1 + radius] [0 + t, unit*1 + t]
]; ];
minkowski(){ minkowski(){
@ -624,23 +662,15 @@ module fakeISOEnter(){
} }
} }
module ISOEnterShapeHull(key_profile, thickness, modifier){ //corollary is shape_hull
module ISOEnterShapeHull(thickness_difference, depth_difference, modifier){
unit = 18.16; // TODO probably not unit = 18.16; // TODO probably not
height = 8 - depth_difference;
length = 1.5 * unit; // TODO not used. need for dish
bottom_key_width = key_profile[0] ; translate([-0.125 * unit, unit*.5]) linear_extrude(height=height*modifier, scale=[.8, .9]){
bottom_key_height = key_profile[1];
top_key_width_difference = key_profile[2];
top_key_height_difference = key_profile[3];
total_depth = key_profile[4] - thickness;
top_tilt = key_profile[5];
top_skew = key_profile[6];
top_width_scale_difference = (bottom_key_width - top_key_width_difference) / (bottom_key_width);
top_height_scale_difference = (bottom_key_width - top_key_width_difference) / (bottom_key_width);
linear_extrude(height=total_depth*modifier, scale=[top_width_scale_difference, top_height_scale_difference]){
translate([-unit*.5, -unit*1.5]) minkowski(){ translate([-unit*.5, -unit*1.5]) minkowski(){
fakeISOEnter(); fakeISOEnter(thickness_difference);
} }
} }
} }