#include <Stepper.h>

const int stepsPerRevolution = 2048;

Stepper myStepper(stepsPerRevolution, 8, 11, 10, 12);

const int waterSensorPin = 2; // digital water sensor pin

void setup() {

  Serial.begin(9600);

  Serial.println("Stepper motor water demo starting...");

  pinMode(waterSensorPin, INPUT);

  myStepper.setSpeed(10); // RPM

}

void loop() {

  int sensorState = digitalRead(waterSensorPin);

  if (sensorState == HIGH) { // wet

    Serial.println("Sensor wet! Motor spinning for 5 seconds...");

    unsigned long startTime = millis();

    while (millis() - startTime < 5000) { // spin for 5 seconds

      myStepper.step(1); // one step at a time for smooth motion

    }

    Serial.println("Motor stopped.");

  }

  else { // dry

    Serial.println("Sensor dry. Motor stopped.");

    delay(500); // small delay to avoid flooding the serial monitor

  }

}