After looking through a few threds about people looking for ways to Remotely fire there cannons I thought that I might show you a nifty little Jaycar kit that I have been building this week.
Through the power of SMS you can control up to 8 outputs and monitor 4 inputs so that would probably be more than you'll need to fire a spud gun or whatever.
No I'm not here to try and sell it to you but it is just another way to fire you unit, it would probably good for people with Hybrid cannons who probably don't want to be neer it when it goes off

<a href="http://www.jaycar.com.au/productView.as ... BCATID=">A link that should have been put in tags...</a>
oh well hope it helps someone out there