Hello all, I am now doing a GCSE project, and I am stuck on my own idea about making a computer overheat detector. I dunno what thing to use to monitor the temperature, as my budget is limited I should not buy stuff but to make one myself. Is a bimetallic strip good enough to do the sensor job? What temperature should I set to turn on the alarm? And is it OK that I gonna put it on the back of the computer, just outside the computer fan?