The sensor node is comprises of the EC-5 sensor, MPC82G81GA microcontroller, and nRF24L01 transceiver.
The EC-5 sensing electrode gives voltage input to the MPC82G516A microcontroller.
The analog to digital converter (ADC) of the microcontroller will process the voltage input into digital forms and send it to nRF24L01.
The sensor node transmits the data to the receiver node.
The receiver node is connected to the computer via RS232 as shown in right side of Fig. 1.
The transmitted data will be stored in the database to categorize the soil moisture content.
This will also be the basis for water irrigation scheduling