From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Tue, 5 Sep 2017 06:05:21 +0000 (+0200)
Subject: Holder for the Cateye Tomo bike speedometer reed switch
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=d28cba77ee767e5ddd926fdeaebbdd72ea8f92f7;p=things.git

Holder for the Cateye Tomo bike speedometer reed switch
---

diff --git a/bike-comp-sensor-holder.scad b/bike-comp-sensor-holder.scad
new file mode 100644
index 0000000..644fb6e
--- /dev/null
+++ b/bike-comp-sensor-holder.scad
@@ -0,0 +1,53 @@
+eps = 0.01;
+infty = 100;
+
+wall = 1;
+ziptie_w = 2.5 + 0.5;
+ziptie_h = 2.0 + 0.5;
+
+fork_diam = 30;
+ring_h = 2*wall + ziptie_h;
+
+base_d = 10;
+base_h = 4.5;
+hole_d = 3.5 + 0.5;
+
+// cuircular base with screw hole
+difference() {
+	hull() {
+		cylinder(r = base_d/2, h = base_h);
+		translate([-base_d/2-wall, -base_d/2, 0])
+			cube([wall, base_d, base_h]);
+	}
+	translate([0, 0, -infty/2])
+		cylinder(r = hole_d/2, h = infty);
+	for (angle = [0:30:360]) rotate([0, 0, angle])
+		translate([0, 0, base_h])
+			rotate([0, 90, 0])
+			cylinder(r1 = 0, r2 = 1, h = base_d/2+eps, $fn=4);
+}
+
+// ziptie holding part
+translate([-base_d/2-fork_diam/2 - ring_h, 0, 0])
+intersection() {
+	translate([0, -base_d/2-eps, 0]) cube([infty, base_d+2*eps, 15]);
+
+	translate([0, -base_d/2, base_h])
+	rotate([-90, 0, 0])
+	difference() {
+		scale([1, 0.8, 1])
+		cylinder(r = fork_diam/2 + ring_h, h = base_d);
+		// fork itself
+		translate([0, 0, -eps])
+			cylinder(r = fork_diam/2, h = base_d + 2*eps);
+	// two ziptie holes
+	for (z = [wall, base_d - wall - ziptie_w]) 
+	translate([0, 0, z])
+		difference() {
+			cylinder(r = fork_diam/2 + wall + ziptie_h,
+				h = ziptie_w);
+			translate([0, 0, -eps])
+				cylinder(r = fork_diam/2 + wall, h = ziptie_w+2*eps);
+		}
+			
+}}