My teacher and I want to make an incubator that will provide an environment with a optimal temperature of 37C. This is our final year project since now that AP exams are over... Our problem is trying to get a controller that will regulate the temperature within the incubation tank. I proposed two methods, 1) To use a computer to monitor the temperature by using the temperature sensor built into motherboards/CPUs/etc and to regulate fan speed within the incubation tank through the computer as well. 2) Buy a temperature controller that's used in a thermostat, a cheap on/off system. However, the problem that I'm facing for both methods is 1) How do I connect our heat source (a heating pad) to the temperature monitor, be it a on/off system or the computer. 2) I don't have any clue about circuit boards or electrical engineering or programming. But I'm more than willing to learn. Does anyone know the best way to go about this? Which method would work out best (hopefully with the cheapest price)?