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Components include: Button, LED light, Temperature sensor

The goal is to use the temperature sensor to detect the temperature and use ifttt to send SMS to the connected phone at 7:30 in the morning. At the same time the LED light is to inform the weather and the button is to detect the temperature and send the SMS right now. 

The challenge is to think about a good way to send SMS,  I don't think sending SMS every hour is a good choice, so I choose a fix time to send SMS which is in the morning.

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