Merge pull request #26 from mpredfearn/master

Add 6mm square adapter plus openscad project

BlindsAdapter.scad

@@ -0,0 +1,17 @@
+
+
+$fn=144;
+
+shaft_diameter = 6.5;
+
+difference() {
+    cylinder(18, 7, 7);
+    
+    //Blinds shaft
+    translate([-shaft_diameter/2, -shaft_diameter/2, 7])
+        cube([shaft_diameter, shaft_diameter, 11]);
+    
+    // Motor shaft
+    translate([-6/2, -3.5/2, 0])
+        cube([6, 3.5, 7]);
+};