First off I'd like to say I've always thought sprinkler controller designers have no clue how to design a system that normal people could make any logic of. So thanks to Dan for a simple and easy to understand Human interface. Also being able to turn a zone on/off from my phone without having to run back and forth from the control box to troubleshoot a problem is huge although I do get a lot wetter than I used to. 
I'm in the process of migrating from a rPi 2 to a 3B, for some reason I ran out of memory. I'm not much of a Linux person but I am looking forward to using MQTT.
I gutted the original Rain Bird box but saved their 24VAC transformer to run the sprinkler valves. There is a 5VDC wall wart behind the thin piece of plywood. I'm currently running 9 zones.
I'm in the process of migrating from a rPi 2 to a 3B, for some reason I ran out of memory. I'm not much of a Linux person but I am looking forward to using MQTT. I gutted the original Rain Bird box but saved their 24VAC transformer to run the sprinkler valves. There is a 5VDC wall wart behind the thin piece of plywood. I'm currently running 9 zones.