Help me design my "carputer" to work in the cold (advice on building a heater) Hello. You guys seem to be a knowledgeable bunch, so I thought maybe I'll post thing. My problem is that I custom built a computer to run in my car and I really need some help. I live in Calgary, Canada where in the winter, it can get down to -30C. The actual computer itself runs fine and I am not worried about that. However, I bought a motorized lcd touchscreen(k301 or mtsvo-sc), which does not work so well in the cold. The problem is that it has an electronic sensor which prevents the screen to open when the temperatures drop below -5C. The lights will just flash until the temperature has warmed up. I would like to force this screen to open in the winter. Its dissapointing to spend $400 canadian on a screen, but to have it not operational for 1/4th of the year due to weather problems. I have already tried taking apart the screen in an attempt to perhaps find the chip which does the temperature sensing, and maybe try to hack that. So far, no luck. Now maybe I am thinking maybe try to build a heater and I would like some tips, advice, whatever to help me get this working. I was thinking maybe using some small resistors and wiring them up as a heat source within the touchscreen. I got the idea from randomly finding a page where the guy built a "dew heater" for his telescope using resistors. Idealy, I would like to know where the temperature sensor is so that I can build the heater as close to it as possible for fast results, but I do not know where this temperature sensor is. So now maybe I am thinking about building a "sheet" of resistors to place in the bottom of this unit as a heat source. When folded up, my touchscreen is the size of a standard single DIN radio. How much wattage would you guys suggest to bring the temperature of this unit up from -30C to 0C. Just a rough estimate maybe. The heat probably wont be spread evenly, so dont assume this to be a thermodynamics question I'll probably also use ducttape around this whole heater sheet just to keep from having anything shorted out. So what should be the maximum power dissipated by each resistor, just to make sure the duct tape doesnt melt? I'm also concerned about condensation. I'd like the heaters to heat everythig up ASAP, but then I risk rapid condensation. Maybe some of you electrical engineers/circuit designers can give some suggestions. Are there any other considerations I should take into account? I'm open to all advice. Thanks!