From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Thu, 17 Sep 2015 13:53:42 +0000 (+0200)
Subject: Speedometer illumination
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=commitdiff_plain;h=6d376a84ff6b0cb239f8d05f8e65c48972335d0d

Speedometer illumination
---

diff --git a/parts/speedometer.scad b/parts/speedometer.scad
new file mode 100644
index 0000000..df0801a
--- /dev/null
+++ b/parts/speedometer.scad
@@ -0,0 +1,99 @@
+infty = 200;
+eps = 0.05;
+
+tube_d = 31.8;
+tube_d1 = 28;
+body_w = 10;
+body_h = 30;
+
+wall = 2;
+
+led_d = 3 + 0.5;
+
+zip_w = 3.5;
+zip_h = 2.5;
+
+top_w = 6+2*wall;
+top_led_h = body_h-9;
+
+cable_w = 6;
+cable_h = 3;
+
+module body() {
+	hull() {
+		cylinder(r = tube_d/2 + wall, h = body_w);
+		translate([body_h + tube_d/2, 0, 0])
+			scale([0.75, 1, 1])
+			cylinder(r = top_w/2, h = body_w);
+	}
+}
+
+module chamber() {
+/*
+	intersection() {
+		hull() {
+			translate([0, -tube_d/2, wall])
+				cube([eps, infty, infty]);
+			translate([tube_d/2+body_h-eps, -top_w/2+wall, wall])
+				cube([eps, infty, infty]);
+		}
+		translate([tube_d/2 + 2*wall, -tube_d/2, 0])
+			cube([body_h-3*wall-5, tube_d+2*wall, body_w+eps]);
+	}
+*/
+	difference() {
+		hull() {
+			translate([0, 0, wall])
+				cylinder(r = tube_d/2, h = body_w);
+			translate([tube_d/2+body_h-eps, 0, wall])
+				scale([0.75, 1, 1])
+				cylinder(r = top_w/2-wall, h = body_w);
+		}
+		// bottom part
+		translate([0, -tube_d/2-wall-eps, 0])
+			cube([tube_d/2+wall+zip_h/2, tube_d+2*wall, body_w+2*wall]);
+		// top covered part
+		translate([top_led_h + tube_d/2, -tube_d/2, body_w-wall])
+			cube([infty, tube_d, 2*wall]);
+		// wall with hole for LED
+		translate([top_led_h + tube_d/2, 1, wall])
+			cube([wall, infty, infty]);
+	}
+}
+
+module holder() {
+	difference() {
+		body();
+		// cut off the bottom part
+		translate([-infty+tube_d/4, -infty/2, -infty/2]) cube(infty);
+		// main tube
+		translate([0, 0, -eps])
+			cylinder(r1 = tube_d1/2, r2 = tube_d/2, h = body_w + 2*eps);
+		// zip tie hole
+		scale([1, 1.05, 1])
+		translate([0, 0, body_w/2 - zip_w/2])
+			rotate_extrude(convexity = 10) {
+				translate([tube_d/2 + wall, 0, 0])
+				square(size = [zip_h, zip_w]);
+			}
+		chamber();
+		// front hole
+		translate([tube_d/2 + wall + zip_h/2, 0, wall])
+			cube([top_led_h - wall - zip_h/2, tube_d, body_h]);
+		// LED hole
+		translate([tube_d/2+top_led_h+2*wall,1.5*wall, body_w/2-0.5])
+			rotate([-15, -65, 0])
+			cylinder(r = led_d/2, h = 10);
+		// cable hole
+		hull() {
+			translate([tube_d/2 + wall + zip_h/2, -10,
+				body_w/2-zip_w/2])
+				cube([cable_h, cable_w, eps]);
+			translate([tube_d/2, -10, -eps])
+				cube([cable_h, cable_w, eps]);
+		}
+	}
+}
+
+holder();
+