#include <Stepper.h>
int potVolt;
int speedClockwise;
int speedAntiClockwise;
Stepper stepper1(200, 4,3);
void setup() {
  // put your setup code here, to run once:
  //stepper1.setSpeed(200);
  pinMode(A0, INPUT);
 //stepper1.step(500);
}

void loop() {
  // put your main code here, to run repeatedly:
  potVolt=analogRead(A0);
  speedClockwise=map(potVolt,513,1023,1000,0);
  speedAntiClockwise=map(potVolt,0,512,0,1000);
  if(potVolt>512){
    stepper1.setSpeed(speedClockwise);
    stepper1.step(1);
  }
  if(potVolt<513){
    stepper1.setSpeed(speedAntiClockwise);
    stepper1.step(-1);
  }
}