plant soil moisture tester circuit


Posted on Feb 5, 2014

A very simple and useful project of soil moisture circuit. The circuit is using only four components and a 3 volt battery. The circuit will detect if there is water in the soil of any plant and light up the LED. The resistor R2 is a potentiometer to adjust the level on which you want to make the LED on.


plant soil moisture tester circuit
Click here to download the full size of the above Circuit.




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