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Practical Raspberry Pi by Brendan Horan

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CHAPTER 3

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A Simple Temperature Sensor

Unlike a standard computer, the Raspberry Pi is unlikely to alter the temperature of your room (well, unless you have a cluster of them: then you may have heat issues). It’s widely known that high temperatures can affect your computer. Nowadays most new machines have protection circuits to ensure that they do not let the magic smoke out, although this has not always been the way with electronics in computers. Not so long ago, if you seated your heatsink incorrectly you were more than guaranteed to let the magic smoke out, usually with a loud bang or a lot of smoke (see Figure 3-1 for the results).

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