Okay, thanks.
I was looking at that, and have a few questions.
1) What is the GPIO?
2) I don't understand the difference between the Start() method and what I was previously doing. (I had it set so if the trigger is pulled, the Relay is set to be forward, powering the compressor) What does the Start() do? From what I saw in the code, it just sets enabled to be true, but it doesn't check the pressure constantly, does it?