So I finally got my irrigation system hooked up to my home automation system today. Very cool. The sotware I'm using will do things like use WeatherBug or Weather Underground do not run the sprinklers based on weather conditions (Rain, wind, etc.), measure water utilization over time, etc. With the addition of moisture probes I can even have it water based on how much a zone needs, not just time schedules.
Yes I know I'm a geekl but it's a fun hobby.
This is the software I'm using ... cool stuff.
http://www.mcssprinklers.com