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 MICROCONTROLLER 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 PIC Microcontroller, soil moisture sensors, water motor, Relay with relay driver, GSM. A water motor will get switched ON /OFF depending on the soil moisture condition and status of motor can be sending to the user mobile in the form of SMS through GSM.   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.        

The major building blocks of this project are:  

1. Regulated power supply.
2. PIC Micro controller.
3. Reset Button.
4. Soil moisture sensor.
5. GSM.
6. Relay.
7. Crystal
8. LED indicators.

        Software’s used:  

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

          Regulated power supply:

               

Block Diagram:      

video: