This is currently a small project that enables automation of temperature and humidity monitoring in various environments, e.g. server rooms, vine cellars etc.
The idea is to use a sensor and a Raspberry Pi to measure the temperature and humidity of the immediate environments in order to notify the interested person when ever the two parameters cross a certain threshold via SMS.
The DHT22 (A2302) sensor is a digital relative humidity and temperature sensor. Find out more about the sensor in the datasheet
The API used for sending SMS messages in this demo is Nexmo SMS API