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Measuring temperature is a popular way to get started with analog sensing. This example uses the TMP36 low-voltage linear temperature sensor that is included in the XBee Zigbee Cloud Kit. The TMP36 is very easy to set up. It doesn’t require any complicated circuits or tricky calculations to determine if it’s hot or not.
The sensor generates a voltage output output that is directly proportional to the Celsius temperature. The hotter it is, the higher the voltage that is passed to the XBee’s analog-to-digital converter (ADC). This reading is then sent via Device Cloud to the XBee Zigbee Cloud Kit’s online dashboard application where you can monitor the temperature right in your web browser.