I'd like to start a new project but after My wife accused me of giving our Dryer the Eye the other day it might not be so smart.
Plus, She just gave birth last Monday and seems to think that's more important than spending all my spare time fiddling around in my shop!
Between the temp control and the burner is a solid state relay.
My temp controller has a on/off relay built in, I wired from there to a regular duplex outlet. (One side of the outlet is hot all the time the other side is controlled by the controller). From there I just plug the burner in the outlet. There is a thermocouple in the smoker that sends the signal back.
Given the choice select a type K thermocouple. (The metals in there do not rust like a type J)