The lower the water content in the soil, the worse the conductivity and the higher the resistance. The sensor works in a way that the more water in the soil, the greater the conductivity and the lower the resistance. The reading will begin to show on the serial monitor. Insert the soil moisture sensor into the soil. Using the potentiometer, one can adjust the threshold value. Then the code should be uploaded into Arduino. In the Arduino IDE, paste the above code. Return val // Return analog moisture valueĬonnect the Arduino to the soil moisture sensor. Int val = analogRead(sensorPin) // Read the analog value form sensorĭigitalWrite(sensorPower, LOW) // Turn the sensor OFF This function returns the analog soil moisture measurementĭigitalWrite(sensorPower, HIGH) // Turn the sensor ON get the reading from the function below and print it Pinouts of Soil Moisture Sensor Pin Number As a result, the Sensor can produce both digital and analog output. The Sensor Module collects data from sensor probes, examines it, and transforms it into a digital or analog output. The probes enable current to flow through the soil, and the resistance value is calculated based on the moisture content of the soil. The Sensing Probs and the Sensor Module are the two primary components of this sensor. The volumetric level of water within the soil can be measured with this sensor. An Overview of Soil Moisture SensorĪ Soil Moisture Sensor is an electronic sensor that detects the moisture content of the soil. But, before making the circuit, let us briefly discuss the soil moisture sensor. So, in this tutorial, we are going to interface ” Soil Moisture Sensor with Arduino UNO”. The sensor with interfacing with Arduino calculates the volumetric content of the water and displays the result. As a response, the designers created a tiny and portable soil moisture sensor to prevent mild moisture concerns. It also has an impact on the irrigation system. As a result, yield is reduced, and seed loss is a negative effect. Unnecessarily high moisture levels can harm the soil. Serial.For agriculturalists and farmers, moisture is a huge difficulty.

prevent corrosion of the sensor as it sits in the soil.

we'll use a digital pin to power the sensor.

Rather than powering the sensor through the 3.3V or 5V pins,

Int soilPower = 7 //Variable for Soil moisture Power Int soilPin = A0 //Declare a variable for the soil moisture sensor Int val = 0 //value for storing moisture value This sketch was written by SparkFun Electronics Joel Bartlett August 31, 2015īasic skecth to print out soil moisture values to the Serial Monitor

Soil moisture sensor arduino