I have 1st generation rachio. I used to use Orbit controller for 10 years now. Was very happy with Orbit and sprinklers worked awesome. Something happened to me and I decided to change my working orbit controller with 1st gen rachio. since then lots of my sprinklers leak a lot of water after shutting down. so much so that it floods the streets and neigbhors look at me indirectly complaining about the water waste. I dug up one of the sprinklers from lawn and changed it (spoiled lot of my lawn). I changed it with a new sprinkler and the problem is still same in lots of sprinklers and also in the one which I replaced with new sprinkler.
orbit wiring and rachio wiring attached.
One unhappy customer