By the way, I tested the low battery indicator quite thoroughly. It gives plenty of headroom between the indicator coming on and the controller acting up. In wireless mode, it just quits. In wired mode it'll produce an interesting light show on it's own when you get to the point where the DMX signal starts falling apart. So if you see strange behavior from the controller, check the low battery indicator. I made it so it will flash (third decimal point) so it should be easy to notice.
Battery life shouldn't be too much of an issue with the 4 AA's. A good set of rechargables (2400mA) should give about 24 hours of on-time in wireless mode, and about 40 hours in wired mode. I did my best to make it as efficient as possible.