// PG UP = Blinds up
// PG DN = Blinds Down
#include <Stepper.h>

const int stepsPerRevolution = 200;
const int dirPin = 2;
const int stepPin = 3;
const int enablePin = 8;
const int potPin = A0;

int currentStep = 0;

void setup() {
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
  pinMode(enablePin, OUTPUT);
  
  digitalWrite(enablePin, LOW);
  
  Serial.begin(9600);
  Serial.println("Stepper Motor with Potentiometer Control");
}

void loop() {
  int potValue = analogRead(potPin);
  int targetStep = map(potValue, 0, 1023, -200, 200);
  targetStep *= 5;

  int stepsToMove = targetStep - currentStep;
  
  if (stepsToMove > 0) {
    digitalWrite(dirPin, HIGH);
  } else {
    digitalWrite(dirPin, LOW);
    stepsToMove = -stepsToMove;
  }

  for(int i = 0; i < stepsToMove; i++) {
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(1000);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(1000);
  }

  currentStep = targetStep;
  delay(100);
}