I would like to open/close a valve at a certain temperature (on at 75 off at 70) instead of using an on/off time.
How might I do this? I will be using the basic open sprinkler kit, perhaps the Pi when I learn a bit more.
I am controlling temp in a hydroponics chamber and want to turn the heater on when it gets cold (via relay), and the a/c on when it gets warm.
I am also controlling lighting via another zone, which seems easy via another relay.
These controllers look perfect for what I am wanting to do. Thank you!