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I've got a pretty big yard, and am running 36 sprinkler zones (ok, actually... I've got one currently turned off, so I'm only using 35 at the moment). But still, I have a lot of watering to do.
I've been checking out smart irrigation controllers, and really like the looks of RainMachine (http://rainmachine.com/), but it supports only 12 zones. They suggested I just connect three of them, but the units can't "talk" to each other. That's a deal killer for me, because it will tax my reservoir and well pump too much if more than one zone runs at the same time. If it's hot weather and the 1st controller runs the watering so that zone 12 ends later than normal, the 2nd controller won't know about it and start up zone 13 when zone 12 (or maybe even zone 11) is still running.
I also like the looks of Eve (http://www.eveirrigation.com/), but it doesn't support enough zones, either.
Does anyone know of any smart irrigation systems that are expandable to 35 zones?
Irrigation Caddy looks interesting, but it's not actually "smart" - it won't adjust watering times based on weather. I want mobile app control (maintaining 36 zones is much easier when you don't have to keep running back to the garage to manually start the next zone test). And I also want weather-based watering time changes (and I really like how RainMachine lets you set different vegetation types).
Finally, integration with SmartThings would be a big plus, but that's not a deal killer for me. I want an irrigation controller that's smart and tries to save me water and money based on weather, just like my Ecobee thermostat tries to save me energy and money based on weather.