3. A soil moisture monitoring system is a technology-
driven solution designed to measure and manage
the moisture content in the soil.
Soil moisture sensors are the core components of
the monitoring system. These sensors are
embedded in the soil at different depths to measure
the amount of water present.
Advanced soil moisture monitoring systems may
integrate with irrigation systems to automate
watering based on real-time soil moisture data. This
helps in optimizing water usage, conserving
resources, and promoting healthier plant growth.
INTRODUCTION
5. Sensor PIN
PIN DEFINITIONS
Pin with "S" written on it means signal.
Pin with "-" written on it means GND
(ground).
Pin with "+" written on it means 5v supply.
6. This is an Electrical resistance Sensor. The sensor is made up of two electrodes. This
soil moisture sensor reads the moisture content around it. A current is passed across the
electrodes through the soil and the resistance to the current in the soil determines the
soil moisture. If the soil has more water resistance will be low and thus more current
will pass through. On the other hand when the soil moisture is low the sensor module
outputs a high level of resistance.
This sensor has both digital and analogue outputs. Digital output is simple to use but is
not as accurate as the analogue output.
YL-69 MOISTURE
SENSOR
Vcc power supply 3.3V or 5V
Current 3.5 mA
Signal o/p Voltage 0-4.2V
Digital output 0 or 1
Analog Resistance
GND Connected to ground
7. YL-38 INTERFACE FOR YL-69
The sensor comes with a small PCB board fitted with LM393
comparator chip and a potentiometer.
Output signal Pins (Both Analog and Digital).
Input Power pins for the sensor is also present on this PCB.
8. WORKING
A soil moisture monitoring system is designed to measure and track the moisture content in
the soil, which is important for various applications such as agriculture, environmental
monitoring, and landscaping. Soil moisture sensors are installed at various depths in the
soil. The depth of placement depends on the specific requirements of the application and the
root depth of the plants (in the case of agriculture). The sensors periodically measure the
soil's moisture content and send this data to the data logger. The data logger stores the
collected data and may also processors it to calculate important parameters such as average
soil moisture levels over time. The system can transmit the data to a remote location using a
communication module. This allows users to access the data and monitor soil moisture
remotely. The collected data is analyzed to gain insights into soil moisture trends and
patterns. This information can be used to make informed decisions about irrigation, farming
practices, or other relevant applications.
10. SOFTWARE (CODE)
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); // Replace
0x27 with your LCD I2C address
const int moisturePin = A0; // Analog pin for
moisture sensor
void setup() {
lcd.begin(16, 2);
lcd.print("Moisture Sensor");
delay(2000);
lcd.clear();
}
void loop() {
int moistureValue =
analogRead(moisturePin);
int moisturePercentage =
map(moistureValue, 0, 1023, 0, 100);
lcd.setCursor(0, 0);
lcd.print("Moisture: ");
lcd.print(moisturePercentage);
lcd.print("%");
delay(1000); // Adjust the delay based on
your application
lcd.clear();
}
11. RESULT
Precision Agriculture: Soil moisture data enables farmers to optimize irrigation
practices, resulting in increased crop yields, water conservation, and reduced operational
costs. change, predicting droughts, and assessing the health of natural ecosystems.
Soil moisture monitoring contributes to informed conservation and land management
practices. Soil moisture data aids in efficient water resource management, ensuring the
availability of water for agriculture, industry, and households .
The shift towards precision agriculture is made possible through real-time soil moisture
monitoring. Understanding soil moisture is essential for mitigating the effects of climate
change, predicting droughts, and assessing the health of natural ecosystems
12. Soil moisture monitoring contributes to informed conservation and land management
practices. Soil moisture data aids in efficient water resource management, ensuring the
availability of water for agriculture, industry, and households while safeguarding again
stover use and water scarcity.
Soil moisture monitoring systems continue to evolve with advancements in sensor
technology, data analysis, and remote sensing. Researchers and innovators rely on this
technology to develop sustainable solutions for the challenges of tomorrow.st overuse
and water scarcity.
Soil moisture monitoring systems continue to evolve with advancements in sensor
technology, data analysis, and remote sensing. Researchers and innovators rely on this
technology to develop sustainable solutions for the challenges of tomorrow.
13. APPLICATIONS
1: Irrigation Management: Soil moisture sensors help farmers optimize irrigation
practices by providing real-time data on soil moisture levels. This ensures efficient water
use, reduces water wastage, and enhances crop yields.
2. Precision Agriculture: Soil moisture data, along with other environmental factors,
enable precision agriculture techniques, allowing farmers to tailor their approaches to
individual fields or even specific crop zones.
3. Scientific Research: Researchers use soil moisture sensors in diverse scientific
studies, including ecology, hydrology, and soil science.
4. Ecosystem Monitoring: Soil moisture data is crucial for ecosystem health
monitoring in natural reserves, wetlands, and conservation areas.
5. Reservoir Management: Soil moisture information is used to optimize water
release from reservoirs, ensuring the sustainability of water resource
14. CONCLUSION
Soil moisture monitoring is a critical component of modern agriculture, environmental
conservation, and water resource management. The ability to accurately measure and
analyze soil moisture content provides valuable insights into crop health, irrigation
management, and the sustainability of ecosystems. Soil moisture monitoring is a
multidisciplinary tool that bridges the gap between agriculture, ecology, and water
management. Its applications extend from the local farm to the global stage, highlighting
its significance in addressing today's environmental and agricultural challenges. The
future of soil moisture monitoring promises continued innovation and broader
applications, contributing to more sustainaale and resilient ecosystems and economies
