<story><title>3D printed sundial whose precise holes cast a shadow displaying the current time</title><url>http://www.mojoptix.com/2015/10/25/mojoptix-001-digital-sundial/</url></story><parent_chain></parent_chain><comment><author>gulpahum</author><text>Interesting, on the Southern hemisphere, the sundial needs to point to the South Pole and the design needs to be altered:&lt;p&gt;&amp;quot;in the Openscad script you can set a flag that will simply rotate upside-down the whole swiss cheese inside the gnomon, and build a ‘Southern-hemisphere’ version of the gnomon. This way, the ‘roo can simply use this Southern-hemisphere sundial exactly the same way a cow or a penguin would use their Northern-hermisphere version the sundial, with just one difference: the ‘roo will have to point the tip of his sundial toward the &lt;i&gt;South&lt;/i&gt; Pole.&amp;quot; [1]&lt;p&gt;[1] &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;www.mojoptix.com&amp;#x2F;2015&amp;#x2F;10&amp;#x2F;25&amp;#x2F;mojoptix-001-digital-sundial&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;www.mojoptix.com&amp;#x2F;2015&amp;#x2F;10&amp;#x2F;25&amp;#x2F;mojoptix-001-digital-sund...&lt;/a&gt;</text></comment>
<story><title>3D printed sundial whose precise holes cast a shadow displaying the current time</title><url>http://www.mojoptix.com/2015/10/25/mojoptix-001-digital-sundial/</url></story><parent_chain></parent_chain><comment><author>ant6n</author><text>Skip the intro and see it in action: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;youtu.be&amp;#x2F;wrsje5It_UU?t=12m58s&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;youtu.be&amp;#x2F;wrsje5It_UU?t=12m58s&lt;/a&gt;</text></comment>