@moonland Or like this:

Made one, correct me if this is not how you have yours.

@moonland Awesome, glad to hear that! You should post a diagram for others looking to take advantage of the feature.

@moonland Try removing the ground listed here: you might have to isolate the ground loop entirely based on your fans Basically connect the 2...

@moonland If the relay is in the ground loop then when the NC or NO is triggered it will break the circuit. You may need to check the box in the progr...

Decided to see if i could figure it out, I think it looks right...

I second this! can we get some more documentation?

Still need to know if a Powersupply with input =100-120v~50/60Hz 1.0A output = 12v===2.5A and a Arduino Uno can handle two of these fans:

@admin5435 Thank you for the info!