I was hoping that someone could post or link to a small humidistat control circuit that i can add to my thermostat design. Here is what i have planned. Powered on 12v, Pot for set point, Range 30-90%, around 5% accuracy. Switching a relay for a 120v humidifier. relay 12v. I will use it to increase the humidity in my incubator cabinets using a nebulaizer.