Aha, found it on Hack-a-day, I knew I saw this recently here is the link Wireless Presenters Easily Cracked | Hackaday wouldn't be hard to do this with an arduino. The source: blog.teusink.net: Hacking wireless presenters with an Arduino and Metasploit
funny quote at the bottom of this, "I'm not sure whether other presenters are vulnerable, but I think it's pretty likely." - fail.