OpenSprinkler Forums Hardware Questions OpenSprinkler Pi (OSPi) Valves Won't Turn Off Reply To: Valves Won't Turn Off



OK, I tested the voltage a few further ways:

1. Voltage directly at the board

Switches On, Switches Off, behaves as expected

2. Voltage at the end of the cable

Switches On,m Switches Off, behaves as expected

3. Voltage at end of the cable with valve connected

Switches On, won’t switch off, keeps supplying voltage at 23v until I shutdown the board.