Here was a little write-up for the code:
<a href="http:&#x2F;&#x2F;rm2084.blogspot.com&#x2F;2015&#x2F;11&#x2F;hacking-polar-loop.html" rel="nofollow">http:&#x2F;&#x2F;rm2084.blogspot.com&#x2F;2015&#x2F;11&#x2F;hacking-polar-loop.html</a>