This sounds like a really bad idea...
Edit: I'm not at all opposed to automated trading on principle, even in bitcoin. But this particular instance sounds like it will end in tears
Good luck gewure. I have written an automated trading system and it works pretty well. The benefits of using an automated trading system is that it removes the largest bias that will affect anybody's trading methodology... human emotion.
If you design a system that is in effect correct 51% of the time and you code something up to trade on it consistently; let it run and let the easy money flow into your accounts without you having to move your fingertips.
Those who typically design automated trading systems will aim to be correct >51% of the time which isn't too difficult. There are hundreds of different methods and tactics that can be used to gain small margins here and there a few of which have already been talked about in this thread. Add some code to a handful of them and you will have a very effective trading system which will have the capability of pulling small profits upon each trade.