https://opensprinkler.com/forums/topic/cannot-communicate-with-board-v2-1u/
I just found this thread, and it’s the same exact issue I’m having.
Here is the voltage on my pins, as directed to nsato by Ray in the referenced link:
1:2.6v
2:18.7mv
3:1.58v
4:3.27v
5:3.27v
6:30.1mv
7:3.1v
8:0.1v
9:3.04v
10:3.28v
11:20mv
12:1.17v
13:1.17
14:1.21
15:3.27v
16:3.25v
17:3.25v
18:20.8mv
19:3.27v
20:3.27v
21:19.9mv
22:21.1mv
23:1.34v
24:1.18v
25:3.27v
26:20.1mv
27:19.1mv
28:3.27
I assume my voltage meter is reading the mV, even though the comparison with the referenced URL shows 0v. I assume that’s what I should put there, but I rather give what i see, than what I feel.