// Sample code for soil moisture sensor and detecting if the moisture is too much.

int sen = A1;
void setup()
{
  Serial.begin(9600);
  pinMode(13,OUTPUT);
}
void loop()
{
  float moisture_percentage;
  int sensor_analog;
  sensor_analog = analogRead(sen);
  moisture_percentage = (100 - ((sensor_analog/1023.00)*100));
  Serial.print("Moisture = ");
  Serial.print(moisture_percentage);
  Serial.println("%");
  delay(1000);
  if (moisture_percentage > 20)
  {
    digitalWrite(13,HIGH); 
  }
  else
  {
    digitalWrite(13,LOW);
  }
}