Soil Moisture Sensor Circuit Using 555. This is a project of a simple moisture sensor using 555 ic. Because of the 555 pin the heavily reduced current because of the high resistance flow through the sensor.
Using the capacitor moisture sensor with an arduino. I have built a grain moisture sensor using a 555 timer and an arduino as shown in the figure. Located between the 555 pin 7 and the positive terminal of the battery as shown in the diagram.
I have noticed that the higher the moisture of the grain the lower is the voltage read by the analog pin.
This project focuses on the design and implementation of a digital soil moisture meter that uses the 555 integrated circuit timer as a major component of the design. We then measure this voltage by use of an analog to digital converter which produces a number that we can then interpret as soil moisture. I have noticed that the higher the moisture of the grain the lower is the voltage read by the analog pin. The buzzer will beep until probes detect soil moisture.
