Smart irrigation based on soil moisture and cloud monitoring over Internet of Things

Automatic plant irrigation based on soil moisture and monitoring over IoT




Title of the project    : Automatic plant irrigation based on soil moisture and monitoring over IoT

Domain                                   :           Wireless Communication & Embedded Systems

Software                                 :           Embedded C, Keil uvision3,proload .

Microcontroller                       :           AT89S52

Power Supply                          :           +5V, 500mA Regulated Power Supply

Display                                    :           LCD HD44780 16-character, 2-line (16X2)

Dry/Wet Sensor                      :           1

AC Motor                               :           Submersible motor

Crystal                                     :           11.0592MHz

Communication device           :           ESP8266

Applications                            :           Industrial Automation, Weather stations, Home





Irrigation system in India has given a high priority in economic development. Many new concepts are being developed to allow agricultural automation to flourish and deliver its full potential. To take full advantage of these technologies, we should not just consider the implication of developing a new single technology but should look at the wider issues for complete development of a system.


The project irrigation control using AT89S52 is designed to tackle the problems of agricultural sector regarding irrigation system with available water resources. Prolonged periods of dry climatic conditions due to fluctuation in annual precipitation, may appreciably reduce the yield of the cultivation. The expenses in establishing many of these crops and their relative intolerance to drought make an effective irrigation system a necessity for profitable enterprises.


In this project we are using AT89S52, Moisture sensor, AC submersible pump. A submersible motor will get switched ON /OFF depending on the soil moisture condition and status of motor can be displayed on 16X2 LCD. An IoT module is interfaced to the controller to update the information in the web server about the condition of the field.


This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.

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