• Triac not shutting off (24v AC sprinkler valve control)

    Hi All, I'm working on replacing my aging and broken sprinkler controller, and found some open source software (OpenSprinkler) to run on a Raspberry Pi that handles the scheduling very nicely (plus it has an app for my phone). With that software I'm able…
  • TIP120 Transistor for AC voltage?

    Hello all! My sprinkler controller is starting to act up and it's so old I can't find replacement parts! So I'm thinking of using a Raspberry Pi to control the valves. I've noticed online opensprinkler.com has done this before. I like their setup, and…