Portable Thermometer
Published in issue 379, July/August 2008
The small circuit described here is very easy to use and consumes so little current that it will work for the battery's shelf life. The circuit uses a standard LM35DZ sensor whose analogue output voltage is buffered by an LM358. The voltage is read by the microcontroller and converted into a BCD value so it can appear on the multiplexed 7-segment displays.
 Software
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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