Let me start by saying: Fantastic job building opensprinkler. This has been a fun project and a great learning experience.
Just got done assembling a DIY kit. Tests checked out. No visible solder bridges. But when I turn on any of the zones in manual mode I can hear ALL of the valves open up (can hear air coming through the sprinkler heads from zones that are supposed to be off). The weird thing is I have a zone on an expansion board. Even when I unplug the expansion board and turn any of the other zones on I can see water dripping from that zone.
Not sure what’s going on. I’m not sure where to begin troubleshooting this one. My old sprinkler controller worked fine. Any ideas?