From 84f144d6f930ac00c842858c67d95b5b8c552695 Mon Sep 17 00:00:00 2001
From: "Jan \"Yenya\" Kasprzak" <kas@fi.muni.cz>
Date: Wed, 19 Jun 2019 17:42:06 +0200
Subject: [PATCH] potentiometer knob for fs-i6

---
 fs-i6-knob.scad | 51 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 fs-i6-knob.scad

diff --git a/fs-i6-knob.scad b/fs-i6-knob.scad
new file mode 100644
index 0000000..f909d48
--- /dev/null
+++ b/fs-i6-knob.scad
@@ -0,0 +1,51 @@
+infty = 100;
+eps = 0.01;
+
+pin_d = 6.6;
+pin_d2 = 8.5;
+pin_h = 10;
+
+out_d = 11;
+wall = 1;
+
+slot_w = 0.6;
+slot_h = pin_h;
+slot_angle = 45;
+
+difference() {
+	union() {
+		cylinder(r = out_d/2, h = pin_h);
+		for (angle = [0:15:360]) rotate([0, 0, angle])
+			translate([out_d/2, 0, 0])
+				cylinder(r = 0.9, $fn = 3, h = pin_h);
+		// +-90 degree protrusions
+		for (angle = [90,270]) rotate([0, 0, angle])
+			translate([out_d/2, 0, 0])
+			rotate([0, 0, 45])
+				cylinder(r = 1.5, $fn = 4, h = pin_h);
+		// center protrusion
+		difference() {
+			translate([out_d/2, 0, 0])
+				cylinder(r = 2.5, $fn = 3, h = pin_h);
+			translate([0, 0, 2*pin_h/3 - wall/2])
+				cylinder(r = infty, h = wall);
+			translate([0, 0, pin_h/3 - wall/2])
+				cylinder(r = infty, h = wall);
+		}
+		// bottom cylinder
+		cylinder(r = out_d/2 + 0.9, h = wall, $fn = 360/15);
+		// top cylinder
+		translate([0, 0, pin_h - wall])
+		cylinder(r = out_d/2 + 0.9, h = wall, $fn = 360/15);
+	}
+	difference() {
+		translate([0, 0, -eps])
+			cylinder(r = pin_d/2, h = infty, $fn = 32);
+		rotate([0, 0, slot_angle])
+		translate([-pin_d/2-eps, -slot_w/2, 0])
+			cube([pin_d+2*eps, slot_w, slot_h-eps]);
+	}
+}
+
+		
+
-- 
2.43.0