DTH11 includes both Humidity and Temperature sensor.
How to create an ultrasonic range detector using Arduino and a SR04 ultrasonic sensor.
It is a simple project and also very dangerous as we are going to deal with high voltage of 220v.
Project tutorial by FabLabz
Thanks for your comment. The reason why we are using GSM is that in India we don't have WiFi facilities, that too in villages. Also this project is totally dedicated to Farmers. This is the main reason for why we are using GSM and GPRS. Regarding the sent data, the device is fixed under a solar panel in the open farm field. So we are concious in send the correct data to Wunderground.
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