Project #15: Environment – Soil Moisture Sensor – Mk20

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Soil Moisture Sensor

Soil moisture is the critical parameter in agriculture. If there is a shortage or overabundance of water, plants may die. At the same time, this data depends on many external factors, primarily weather conditions and climate changes. That is why it is so vital to understand the most effective methods for analyzing soil moisture content.

This term refers to the entire quantity of water in the ground’s pores or on its surface. The moisture content of soil depends on such factors as weather, type of land, and plants. The parameter is vital in monitoring soil moisture activities, predicting natural disasters, managing water supply, etc. This data may signal a future flood or water deficit ahead of other indicators.

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

SparkFun RedBoard Qwiic

ASM – A0
LEDP- 13
LEDG- 12
VIN – +5V
GND – GND

DL2411Mk03p

DL2411Mk03p.ino

/****** 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

// 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

// 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 );

}

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