small control horn for rc plane

diff --git a/rc-control-horn.scad b/rc-control-horn.scad
new file mode 100644 (file)
index 0000000..0b6f19d
--- /dev/null
+++ b/rc-control-horn.scad
@@ -0,0 +1,56 @@
+eps = 0.01;
+infty = 100;
+
+wall = 1;
+
+slot_off = 4;
+
+slot_l = 10;
+slot_depth = 2.5;
+side_w = 4;
+
+base_l = 4 + slot_l;
+
+hole_h = 10;
+hole_d = 1.5;
+hole_step = 1.5*hole_d;
+n_holes = 3;
+
+hole_side = 1.5*wall;
+
+module horn() {
+       difference() {
+       hull() {
+               // base
+               translate([slot_off, 0, 0])
+                       cube([base_l, wall, wall]);
+
+                       for (y = [1:n_holes]) {
+                               translate([0, hole_h -(y-1)*hole_step, 0])
+                                       cylinder(r = hole_d/2 + hole_side,
+                                               h = wall, $fn = 6);
+                       }
+               }
+
+               for (y = [1:n_holes]) {
+                       translate([0, hole_h -(y-1)*hole_step, -eps])
+                               cylinder(r = hole_d/2, h = wall + 2*eps, $fn = 6);
+               }
+       }
+
+
+       // side support
+       translate([slot_off, 0, 0])
+               cube([base_l, wall, side_w]);
+
+       // slot
+       hull() {
+               translate([slot_off + (base_l - slot_l)/2, -slot_depth/2, 0])
+                       cube([slot_l, slot_depth/2, wall]);
+               translate([slot_off + (base_l - slot_l)/2 + wall, -slot_depth, 0])
+                       cube([slot_l - 2*wall, slot_depth/2+eps, wall]);
+       }
+}
+
+for (x = [-1, 1]) scale([x, 1, 1])
+       translate([hole_side + hole_d/2 + 2*wall, 0, 0]) horn();