About This Project

In this tutorial, we will learn how to detect moisture in the soil.

Project Info

  • Difficulty: Easy
  • Estimated Time: 30 min
  • Category: Breadboard
  • Tags: soil moisture sensor, LED’s, resistors, breadboard, Jumper wires, Battery

Introduction

Many times, due to our negligence or due to the reason that we are away from our home, we are unable to take care of our plants which makes them eventually die due to the shortage of water. What is the solution then? I say, soil moisture sensor.

Soil Moisture Sensor is a low-cost electronic sensor used to detect the moisture of the soil. This sensor helps in measuring the volumetric content of water inside the soil i.e. how moist is the soil. This sensor consists of mainly two parts viz. sensing Probes and sensor module.

Sensing Probes consist of two nickel-coated copper tracks and two header pins connected to the two copper tracks to help in passing the current through the soil and get resistance value depending on the moisture value in the soil. Sensor Module after reading the data from the sensor probes, processes it and converts it into the digital/analog output.

Applications of Soil Moisture Sensor

The main application of soil moisture sensors is the detection of moisture in the soil. The sensor can be used in an irrigation system so that plants get watered automatically when the soil is dry.

Components Required

IMAGE COMPONENT QUANTITY

Breadboard

Breadboard

1

LED’s

1

soil-moisture-sensor

Soil Moisture Sensor

1

battery

Battery

1

jumper-wire

Jumper Wires

As Per Requirement

Building Guide

Step 1: Circuitry of the Robot

  • Assemble all the components required

soil-moisture-sensor

  • Connect Soil moisture sensor to the breadboard.

  • Powering the Soil moisture sensor.

Powering-the-Soil-moisture-sensor

  • Attach LED to the breadboard.

attach-led-to-the-breadboard

  • Now place the soil moisture probe inside the water to detect the output.

now-place-the-soil-moisture-probe-inside-the-water-to-detect-the-output.

Step 2: Circuitry of the Robot

  • Powering the components
  • Powering the soil moisture sensors
  • VCC to 5V
  • GND / to GND
  • o Output to LED positive pin.
  • LED pins
  • Negative to GND.
  • Positive to Output of Soil sensor.

With this we have come to an end of this project. Hope you liked it and would definitely want to try it out. Do let us know your views by leaving a comment below.