regarding to the second topic
The topic is to find exact field's need and to provide its necessity instantly across the field. This involves some sensors, LCD display, GSM and ARM processor. ADC channel pins which are in-built to the processor for conversion of any analog data to digital.
LCD will be on field display purpose. GSM module will contains a Subscriber Identity Module (SIM) user can communicate with this SIM-Number. When the particular command activated or given by the user, immediately the corresponding sensor will activates and reads the present reading and immediately sends results to the same user mobile and displays in the LCD panel in the field. Immediately user will take the necessary action if required. Here we are using total seven sensors to monitor the field condition. Those are Temperature, Humidity, Soil moisture, Leaf sensor, PH
sensor, Level sensor, Phase sensor. All these devices are connected to the ARM processor.GSM is used for communication purpose, with the help of AT (attention)-Commands we can communicate with the components. For soil module and level sensing applications we are using motors. One motor is used to store water and another is for releasing the stored water into the soil.