Luc Paquin
Published © CC BY

Project #15: Environment – Soil Moisture Sensor – Mk20

Project #15: Environment – Soil Moisture Sensor – Mk20

BeginnerFull instructions provided1 hour81
Project #15: Environment – Soil Moisture Sensor – Mk20

Things used in this project

Hardware components

SparkFun RedBoard Qwiic
SparkFun RedBoard Qwiic
×1
Gravity: Analog Soil Moisture Sensor For Arduino
DFRobot Gravity: Analog Soil Moisture Sensor For Arduino
×1
LED (generic)
LED (generic)
×2
ProtoScrewShield
SparkFun ProtoScrewShield
×1
USB Battery Pack
×1
USB Cable Assembly, USB Type A Plug to Micro USB Type B Plug
USB Cable Assembly, USB Type A Plug to Micro USB Type B Plug
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

Read more

Schematics

Fritzing

Code

DL2411Mk03p.ino

Arduino
/****** Don Luc Electronics © ******
Software Version Information
Project #15: Environment – Soil Moisture Sensor – Mk20
15-20
DL2411Mk03p.ino
DL2411Mk03
1 x SparkFun RedBoard Qwiic
1 x Gravity: Analog Soil Moisture Sensor
2 x LED
1 x ProtoScrewShield
1 x USB Battery Pack
1 x USB Micro-B Cable
*/

// Include the Library Code

// Gravity: Analog Soil Moisture Sensor
int iSoilMoisture = A0;
int iSoilMoistureVal = 0;
int zz = 0;
// Change Your Threshold Here
int Threshold = 300;

// LED ProtoScrewShield Yellow
int iLEDProto = 13;

// LED Green
int iLEDGreen = 12;

// Software Version Information
String sver = "15-20";

void loop() {

  // Gravity: Analog Soil Moisture Sensor
  isSoilMoisture();

  // Delay 1 Second
  delay( 1000 );

}

getSoilMoisture.ino

Arduino
// Gravity: Analog Soil Moisture Sensor
// Soil Moisture
void isSoilMoisture(){

  // Connect Soil Moisture Sensor to Analog 0
  zz = analogRead( iSoilMoisture );

  // iSoilMoistureVal => 0~900 Soil Moisture
  iSoilMoistureVal = map( zz, 0, 715, 0, 900);

  // Serial
  Serial.print("Moisture Sensor Value: ");

  // Threshold
  if (iSoilMoistureVal > Threshold) {

    // 300~900 - Humid Soil
    // LEDProto
    digitalWrite(iLEDProto, LOW);
    // Serial
    Serial.print( "Humid Soil " );
    Serial.println( iSoilMoistureVal );
    // LEDGreen
    digitalWrite(iLEDGreen, HIGH);
    
  }
  else {
    
    // 0-300 Dry Soil
    // LEDGreen
    digitalWrite(iLEDGreen, LOW);
    // Serial
    Serial.print( "Dry Soil " );
    Serial.println( iSoilMoistureVal );
    // LEDProto
    digitalWrite(iLEDProto, HIGH);
    
  }

}

setup.ino

Arduino
// Setup
void setup()
{
 
  // Delay
  delay(100);

  // Serial
  Serial.begin(57600);

  // Initialize the LED iLEDProto
  pinMode(iLEDProto, OUTPUT);

  // Initialize the LED iLEDGreen
  pinMode(iLEDGreen, OUTPUT);

  // Delay 1 Second
  delay( 1000 );

}

Credits

Luc Paquin
54 projects • 4 followers
Teacher, Instructor, E-Mentor, R&D and Consulting -Programming Language -Microcontrollers -IoT -Robotics -Machine Learning -AI -Sensors

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