In order to send a signal to the frequency measuring moisture of soil by sending it to a tag next to the ground and reflected waves back to the receiver and receiving data to the microcontroller output further.
The signal frequency to measure soil moisture by sending them to a tag attached to the ground and reflect back to the receiver and a micro-controller receives the data to display next.
Transmitter frequency to measure soil moisture by tag attached to the soil and sent to reflect คลื่นกลับมา also receiver and microcontroller the receive data to display.