OpenSprinkler Forums OpenSprinkler Unified Firmware Rain Delay hardware 1.3u Re: Re: Rain Delay hardware 1.3u



The hardware part of rain sensor is quite simple: one pin is tied to ground, the other pin is connected to the microcontroller’s digital pin 0 (assuming you have 1.3u). So other than checking the solder joints of the rain sensor terminal, and the microcontroller pins, I can’t think of anything else that would cause the issue.