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Automatic irrigation system on sensing soil moisture content

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Uploaded by on Aug 16, 2011

The circuit comprises of sensor parts built using op-amp and are configured here as a comparator. Two stiff copper wires are inserted in the soil to sense whether it is dry. The Microcontroller turns the motor ON and OFF based on sensors condition that is dry or wet respectively. .Sensor signals are operated with the control of software that is stored in ROM of the MC.

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