Data-via-LED-by-Xing

This week I made a simple temperature “reader” with 4 LEDs. It is designed to tell comparison to the average temperature in the space so that the user can easily tell whether it is “cold” or “hot”. Since temperature changes very slowly, so I set the range of the temperature to be 2 degrees and use a cup of hot water to help testing the device. For each LED, there is a certain range of the temperature, basically-

Blue means the temperature is lower than average;

Red*1 means the temperature is a little bit higher than average;

Red*2 means the temperature is much higher than average;

Red*3 means the temperature is way too high.

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Code can be found here

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