Steam Car Pump Controller

sketch.ino

const int RelayPin = 4;
const int WaterSensorPin = A0;
const int SensorWet = 100;
const int MinimumRunTime = 2000;
const int MinimumWaitTime = 2000;
const bool RelayOn = LOW;
const bool RelayOff = HIGH;

bool relayState = false;

void setup() 
{
  Serial.begin(9600);
  
  digitalWrite(RelayPin, RelayOff);   // Turn off relay
  Serial.println(F("RelayOff"));
  
  pinMode(RelayPin, OUTPUT);      // Set RelayPin as output
} 

void loop() 
{ 
  int sensorValue = analogRead(WaterSensorPin);
  Serial.println(sensorValue);
  bool sensorState = sensorValue >= SensorWet;

  if(sensorState != relayState) {
    relayState = sensorState;
    if(relayState) {
      digitalWrite(RelayPin, RelayOn);   // Turn on relay
      Serial.println(F("RelayOn"));
      delay(MinimumRunTime);
    } else {
      digitalWrite(RelayPin, RelayOff);   // Turn off relay
      Serial.println(F("RelayOff"));
      delay(MinimumWaitTime);
    }
  }
}