// for use with Capacitive Moisture Sensor (CMS)
// Replace POT with the CMS
// as each CMS is slightly difference will need to adjust dry and wet values

//Constants
const int dry = 561; // value for dry sensor
const int wet = 318; // value for very wet
int moistureVal =0;

void setup()
{
  Serial.begin(9600);
  pinMode(11, OUTPUT);  // Green LED
  pinMode(12, OUTPUT);  // Yellow LED
  pinMode(13, OUTPUT);  // Red LED
}

void loop()
{
  int sensorVal = analogRead(A0);
  // sensor has a range of 318 to 559
  // need to translate this to a scale like 0% to 100%
  // reference https://www.arduino.cc/reference/en/language/functions/math/map
  int percentageHumidity = map(sensorVal, wet, dry, 100, 0);

  
  Serial.print(percentageHumidity);
  Serial.print("%");
  // Serial.print(" - ");
  // Serial.print("Analog = ");
  // Serial.print(analogRead(A0));

  if(sensorVal >= 500) {
    Serial.println(" - Dry");
    int moistureVal = 1;
    // Serial.print(" - LED ");
    // Serial.println(moistureVal);
    // Setting LED Indicators
    digitalWrite(11, LOW);  // Turn off Green LED 
    digitalWrite(12, LOW);   // Turn off Yellow LED
    digitalWrite(13, HIGH);  // Turn on Red LED
           
  } else if (sensorVal >= 350) {
    Serial.println(" - Good");
    int moistureVal = 2;
    // Serial.print(" - LED ");
    // Serial.println(moistureVal);
    // Setting LED Indicators
    digitalWrite(11, HIGH);  // Turn on Green LED 
    digitalWrite(12, LOW); // Turn off Yellow LED
    digitalWrite(13, LOW);  // Turn off Red LED
    
  } else {
    Serial.println(" - Wet");
    moistureVal = 0;
    // Serial.print(" - LED ");
    // Serial.println(moistureVal);
    // Setting LED Indicators
    digitalWrite(11, LOW);  // Turn off Green LED 
    digitalWrite(12, HIGH); // Turn on Yellow LED
    digitalWrite(13, LOW);  // Turn off Red LED
      
  }
     
  delay(500); // in milliseconds
  
}