Project #15: Environment – Crowtail Moisture Sensor – Mk22

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Crowtail Moisture Sensor 2.0

This Moisture Sensor can be used to detect the moisture of soil and thus to monitor if the plants in your garden need some water. This sensor uses the two probes to pass current through the soil, and then it reads then resistance to get the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly (more resistance). Compares to the other moistures sensor using the same moisture test method, this module has super long legs, making it suitable for actual applications. This Moisture Sensor can be used to detect the moisture of soil or your pet plant’s water level, let the plants in your garden reach out for human help.

Crowtail – I2C LCD

A new crowtail for LCD1602, it contains LCD1602 and MCP23008 module. Unique interface for crowtail. Provide convenience to work with a LCD.

DL2501Mk02

1 x Crowduino Uno – SD
1 x Crowtail – Base Shield
1 x Crowtail – Moisture Sensor 2.0
1 x Crowtail – I2C LCD
1 x Crowtail – LED(Green)
1 x Crowtail – LED(Yellow)
1 x USB Battery Pack
1 x USB Mini-B Cable

Crowduino Uno – SD

SCL – A5
SDA – A4
ASM – A0
LEDY – 7
LEDG – 6
VIN – +5V
GND – GND

DL2501Mk02p

DL2501Mk02p.ino

/****** Don Luc Electronics © ******
Software Version Information
Project #15: Environment – Crowtail Moisture Sensor – Mk22
15-22
DL2501Mk02p.ino
DL2501Mk02
1 x Crowduino Uno - SD
1 x Crowtail - Base Shield
1 x Crowtail - Moisture Sensor 2.0
1 x Crowtail - I2C LCD
1 x Crowtail - LED(Green)
1 x Crowtail - LED(Yellow)
1 x USB Battery Pack
1 x USB Mini-B Cable
*/

// Include the Library Code
// Wire
#include <Wire.h>
// Liquid Crystal
#include "LiquidCrystal.h"

// Liquid Crystal
// Connect via i2c
LiquidCrystal lcd(0);

// Crowtail Moisture Sensor
int iSoilMoisture = A0;
int iSoilMoistureVal = 0;
// Change Your Threshold Here
int Threshold = 300;

// LED Yellow
int iLEDYellow = 7;

// LED Green
int iLEDGreen = 6;

// Software Version Information
String sver = "15-22";

void loop() {

  // Crowtail Moisture Sensor
  isSoilMoisture();

  // Delay 1 Second
  delay( 1000 );

}

getDisplay.ino

// getDisplay
// Crowbits - OLED 128X64 UID
void isDisplayUID(){

  // Set up the LCD's number of rows and columns: 
  lcd.begin(16, 2);
  // Print a message to the LCD.
  // Cursor
  lcd.setCursor(0, 0);
  lcd.print("Don Luc Electron");
  // Cursor
  lcd.setCursor(0, 1);
  // Print a message to the LCD.
  lcd.print( sver );

}
// isDisplay Green
void isDisplayG(){

  // Print a message to the LCD
  // Clear
  lcd.clear();
  // Cursor
  lcd.setCursor(0, 0);
  lcd.print("Humid Soil");
  // Cursor
  lcd.setCursor(0, 1);
  // Print a message to the LCD
  lcd.print( iSoilMoistureVal );
  
}
// isDisplay Yellow
void isDisplayY(){

  // Print a message to the LCD
  // Clear
  lcd.clear();
  // Cursor
  lcd.setCursor(0, 0);
  lcd.print("Dry Soil");
  // Cursor
  lcd.setCursor(0, 1);
  // Print a message to the LCD
  lcd.print( iSoilMoistureVal );
  
}

getSoilMoisture.ino

// Crowtail Moisture Sensor
// Soil Moisture
void isSoilMoisture(){

  // Connect Soil Moisture Sensor to Analog 0
  // iSoilMoistureVal => 0~700 Soil Moisture
  iSoilMoistureVal = analogRead( iSoilMoisture );

  // Threshold
  if (iSoilMoistureVal > Threshold) {

    // 300~700 - Humid Soil
    // LED Yellow
    digitalWrite(iLEDYellow, LOW);
    // Display Green
    isDisplayG();
    // LED Green
    digitalWrite(iLEDGreen, HIGH);
    
  }
  else {
    
    // 0-300 Dry Soil
    // LED Green
    digitalWrite(iLEDGreen, LOW);
    // Display Yellow
    isDisplayY();
    digitalWrite(iLEDYellow, HIGH);
    
  }

}

setup.ino

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

  // Initialize the LED iLED Yellow
  pinMode(iLEDYellow, OUTPUT);

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

  // Display UID
  isDisplayUID();
  
  // Delay 5 Second
  delay( 5000 );

}

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