are you doing this to keep your pi cool, or is it for your 2pacs? My artic breeze USB fan is doing a wonderful job keeping my miners cool, but I have no fan on my pi. Could it be that my pi is overheating?
The temp is on the RaspiB, part of Raspian. I had the habit of opening several browser tabs, and leaving for the day, RaspiB would be down when I got home. Then I saw that just starting the browser, pulling in all those animated advertisements etc. Raised the RaspiB temp right away. So I now check my daily sites and close the browser. Temp drops back down, and cgminer is still running when I get back twelve hours later.