ABSTRACT
As we know that Cultivating some plants and flowers in a closed environment requires precise control of Humidity,
Temperature, Light Intensity and becomes risky and difficult. So if we automate this process by using sensors and actuators
whose settings are set accordingly by the user then the work and burden of the farmer gets reduced to maximum extent. In this
paper we are designing this system, where we place a slave device in the land slots which acquire the data and send it to one
main master device. The slave and master communicates through RS485 network using modbus protocol which is cheap and
yet effective. So that the user can monitor and control each and every node from the master itself. The master also timely
updates the conditions of the plants environment timely to the user through SMS using GSM technology.
Keywords: - GSM, Irrigation, LPC2148 Arm7 microcontroller, Modbus protocol, RS485, SMS.