After reading more on this – I see that your OSBee is similar to what I am looking to do with battery powered ESP board (though probably more than I need) but I like your h bridge implementation over a standard relay.
However, it seems as if your OSBee board is meant as a stand-alone controller, such that for my requirement of 3 different zones, I’d need 3 different controller instances to maintain, instead of one instance of OpenSprinkler having 3 wireless zones.
Am I correct in this assumption?