Hi everyone I have been trying to get info on IR temperature sensors. I have received great explanations of the technology, but I am trying to find out how to build my own. Someone thought they saw plans in a magazine for building a IR thermometer, has anybody seen the ad or know where I can get an explanation of the parts required and some sample diagrams for building one? Any help appreciated. I found some remote IR temp sensors for industrial application with a 4-20ma output, but they are $140. Thats way to much. I am looking to spend about $10 for production (if the project makes it) and more of course for prototyping. Thanks again JOn