Merge pull request #1 from suda/master

automerge

src/bitbeam-angle.scad

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+use <bitbeam-beam.scad>;
+
+beam(4);
+rotate([0, 0, 90])
+	translate([0, -8, 0])
+		beam(4);

src/bitbeam-beam.scad

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+// Description: "LEGO Technic-compatible gridbeam"
+// Project home: http://bitbeam.org
+
+// Each bitbeam is 8mm inches wide. 
+// Center of each hole is 8mm apart from each other
+// Holes are 5.1 mm in diameter.
+
+// Mini
+//beam_width     = 4;
+//hole_diameter  = 2.2;
+
+// Standard
+beam_width     = 8;
+hole_diameter  = 5.1;
+
+hole_radius    = hole_diameter / 2;
+
+module beam(number_of_holes) {
+    beam_length = number_of_holes * beam_width;
+    difference() {
+        // Draw the beam...
+        cube([beam_length,beam_width,beam_width]);
+
+        // Cut the holes...
+        for (x=[beam_width/2 : beam_width : beam_length]) {
+            translate([x,beam_width/2,-2])
+            cylinder(r=hole_radius, h=12, $fn=30);
+        }
+        for (x=[beam_width/2 : beam_width : beam_length]) {
+            rotate([90,0,0])
+            translate([x,beam_width/2,-10])
+            cylinder(r=hole_radius, h=12, $fn=30);
+        }
+
+        // Optional through-hole
+        //rotate([0,90,0])
+        //translate([-4,beam_width/2,-2])
+        //cylinder(r=hole_radius, h=number_of_holes*beam_width+4, $fn=30);
+        }
+}
+
+beam(3);

src/bitbeam-cross.scad

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+use <bitbeam-beam.scad>;
+
+beam(5);
+rotate([0, 0, 90])
+	translate([-(8 * 2), -(8 * 3), 0])
+		beam(5);

src/bitbeam-double-angle.scad

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+use <bitbeam-beam.scad>;
+
+beam(4);
+rotate([0, 0, 90])
+	translate([0, -8, 0])
+		beam(4);
+
+rotate([0, 90, 0])
+	translate([-(8 * 4), 0, 0])
+		beam(4);

src/bitbeam-t.scad

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+use <bitbeam-beam.scad>;
+
+beam(4);
+rotate([0, 0, 90])
+	translate([-(8 * 3), -8, 0])
+		beam(7);

src/bitbeam-triple-angle.scad

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+use <bitbeam-beam.scad>;
+
+beam(4);
+rotate([0, 0, 90])
+	translate([-(8 * 3), -8, 0])
+		beam(7);
+
+rotate([0, 90, 0])
+	translate([-(8 * 4), 0, 0])
+		beam(4);