Schematic Soil Moisture Sensor Arduino Circuit Diagram

Connect the vcc pin to 3 3v of arduino and gnd to gnd.

Schematic soil moisture sensor arduino circuit diagram.

This digital output wet soil l dry soil h is routed to one i o terminal d2 of the arduino microcontroller. The circuit diagram for this is very simple. In the schematic from left we have our soil moisture sensor which is connected to a driver board preety much any soil moisture sensor comes with a driver board example soil moisture meter soil humidity sensor. We have interfaced the moisture sensor with arduino uno board.

Don t change the supply voltage or the 220k as these two values are correct for this circuit. The sensor module contains a potentiometer with it which is used to set the threshold value. Here is a project of a versatile and very sensitive moisture sensor circuit. A 12volt dc water pump is controlled as the soil moisture increases or decreases below a certain pre defined value.

The soil moisture is monitored in real time. Under the circuit diagram section we have our schematic made with fritzing also underneath that we have the practical test setup. In the previous circuits of moisture sensors like plant soil moisture tester circuit or moisture sensor alarm. When soil is moist the current will start flowing from one terminal to another working as a closed circuit.

1 to proceed with its. To connect the soil moisture sensor fc 28 in the digital mode we will connect the digital output of the sensor to the digital pin of the arduino. This soil moisture sensor circuit can be used in many applications like automatic plant irrigation system greenhouse projects etc. When the soil is dried no current will flow through it and it works like an open circuit.

Circuit diagram of the digital soil moisture meter front end of the digital soil moisture meter is a simple soil moisture sensor head built around a few easily available parts. Digital mode interfacing arduino and soil moisture sensor. Working of the sensor head electronics is self explanatory so just follow the conceptual drawing and schematic drawing shown in fig. I have given below soil moisture sensor circuit diagram.

The soil moisture sensor module built around the lm393 comparator gives an active low l level output when the soil is dry determined by a pre setted threshold value. Soil moisture sensor works on the principle of open and closed circuit. In this project we are going to build a transistor based simple soil moisture detector circuit. In this circuit we have used an npn transistor to detect soil moisture.

This is very simple and interesting circuit for electronics lovers. Based on this input at d2 arduino gives an active. Now lets interface the capacitive soil moisture sensor with oled display arduino and display the analog value or soil moisture value in percentage.