add buttoncap with keystem

Author: gluap

lib/utils.scad

@@ -144,4 +144,52 @@ module load_svg(filename) {
   else {
     import(filename);
   }
-}
+}
+
+
+/*
+The code below is from keyv2
+https://github.com/rsheldiii/KeyV2
+
+which is licensed under GPL
+
+We only need the round cherry key stem
+*/
+
+
+
+module rounded_cherry_stem(depth, slop, throw) {
+    difference() {
+        cylinder(d = $rounded_cherry_stem_d, h = depth);
+
+        // inside cross
+        // translation purely for aesthetic purposes, to get rid of that awful lattice
+        inside_cherry_cross($stem_inner_slop);
+    }
+}
+
+module inside_cherry_cross(slop) {
+    // inside cross
+    // translation purely for aesthetic purposes, to get rid of that awful lattice
+    translate([0, 0, -SMALLEST_POSSIBLE]) {
+        linear_extrude(height = $stem_throw) {
+            square(cherry_cross(slop, extra_vertical)[0], center = true);
+            square(cherry_cross(slop, extra_vertical)[1], center = true);
+        }
+    }
+
+    // Guides to assist insertion and mitigate first layer squishing
+    if ($cherry_bevel) {
+        for (i = cherry_cross(slop, extra_vertical)) hull() {
+            linear_extrude(height = 0.01, center = false) offset(delta = 0.4) square(i, center = true);
+            translate([0, 0, 0.5]) linear_extrude(height = 0.01, center = false)  square(i, center = true);
+        }
+    }
+}
+
+function cherry_cross(slop, extra_vertical = 0) = [
+    // horizontal tine
+        [4.03 + slop, 1.25 + slop / 3],
+    // vertical tine
+        [1.15 + slop / 3, 4.23 + extra_vertical + slop / 3 + SMALLEST_POSSIBLE],
+    ];

src/LiteCase/buttonmount_cherry.scad

@@ -1,3 +1,7 @@
+include <../../variables.scad>
+use <../../lib/utils.scad>
+
+
 $fn = $preview ? 20 : 60;
 z = [0, 0, 1];
 y = [0, 1, 0];
@@ -12,6 +16,7 @@ z2 = -cz * 1.5;
 sizet = [cxy + 2, cxy + 2, 4];
 sizef = [cxy + 5, cxy + 5, h];
 z4 = -sizef[2] / 2;
+SMALLEST_POSSIBLE = 0.01;
 
 if ($preview) import("/home/paulg/Downloads/kailh_low.stl");
 module hole() {
@@ -32,22 +37,27 @@ module cable() {
     }
 }
 
-difference() {
-    union() {
-        translate(z4 * z)cube(sizef, center = true);
-        translate(-4 * z)cube([7, cxy + 16, 8], center = true);
-    }
+module button(detail = true) {
+    difference() {
+        union() {
+            translate(z4 * z)cube(sizef, center = true);
+            translate(-4 * z)cube([7, cxy + 16, 8], center = true);
+        }
 
-    hole();
-    #for (i = [-1, 1]) translate((cxy + 8) / 2 * y * i) rubber_ring();
-    handlebar();
-    cable();
-}
-difference() {
-    translate(-0.1 * z)cube([7, cxy + 16, 0.2], center = true);
-    hole();
+        if (detail) {
+            hole();
+            for (i = [-1, 1]) translate((cxy + 8) / 2 * y * i) rubber_ring();
+            handlebar();
+            cable();
+        }
+    }
+    difference() {
+        translate(-0.1 * z)cube([7, cxy + 16, 0.2], center = true);
+        hole();
+    }
 }
 
+button();
 
 module rubber_ring() {
     translate(-18.5 * z)
@@ -90,4 +100,33 @@ module bottom(width = cxy, diam = 5) {
     }
 }
 
-translate(y * 25) bottom();
+translate(y * 25) bottom();
+module buttoncutter(spacing = .5) {
+    translate(-(spacing + 3.5) * z)minkowski() {
+        cube(spacing,center=true);
+        union() {button(detail = false);
+            hull() {
+                linear_extrude(1)translate((-cxy / 2 - 1) * (x + y))square([cxy + 2, cxy + 2]);
+                translate(z * 2.5)linear_extrude(1)translate((-cxy / 2) * (x + y))square([cxy, cxy]);
+            }
+        }
+    }
+}
+
+
+module buttontop(wall=3) {
+    translate(-6 * z)rounded_cherry_stem(6, 5, 4);
+    translate(-6 * z)rounded_cherry_stem(6, 5, 4);
+    difference() {
+        hull() {
+            translate(-z)linear_extrude(1)translate((-cxy / 2 - 1) * (x + y))square([cxy + 2, cxy + 2]);
+            translate(-5*z)linear_extrude(1)translate((-(cxy+5+wall )/ 2 ) * (x + y))square([cxy + 5+wall, cxy + 5+wall]);
+            translate(-8*z)linear_extrude(1)translate((-(cxy+5+wall )/ 2 ) * (x + y))square([cxy + 5+wall, cxy + 5+wall]);
+
+        }
+        translate(-z)buttoncutter();
+
+    }
+}
+
+translate(-30 * y)buttontop();

variables.scad

@@ -301,3 +301,14 @@ logo_generate_templates = false; // set to true to generate 2D template SVGs
 logo_name = "OpenBikeSensor"; // name of a folder inside `logo/`
 logo_mode = "normal"; // "normal" or "inverted"
 logo_part = "main"; // "main" or "highlight"
+
+
+// Lite case
+
+// Lite handlebar button
+SMALLEST_POSSIBLE = .01;
+$stem_throw = 4;
+$cherry_bevel = false;
+$stem_inner_slop = 0.01;
+$rounded_cherry_stem_d = 5.5;
+extra_vertical = 0.2;