Introduction :

The Soil Moisture Circuit, designed for sustainable agriculture, precisely measures soil moisture levels, aiding efficient irrigation to conserve water. With applications in smart agriculture, it innovatively aligns with environmental goals, offering a versatile solution for resource-conscious farming practices.

Working :

In this Soil Moisture Sensing Circuit, we are using the LM3915 IC which is connected with a 9V battery. We connected ten LEDs to the output terminals. We connected the test probe between divider resistors through potentiometer and resistor.

The probe makes the ground to the reference voltage at the pin6 of an IC and changes the reference voltage. Hence this depends on the reference voltage. For the probe, use slew less single-strand wire of copper as the test probe which can measure the moisture level in the soil. Put the test probe ground pin close to the test probe pin.

Applications :

• Agriculture.
• Irrigation systems.
• Farming devices.