int dirPin1=6;
int stpPin1=7;
int dirPin2=4;
int stpPin2=5;


void setup() {
  // put your setup code here, to run once:
Serial.begin(115200);
pinMode(A0, INPUT);
pinMode(A1, INPUT);
pinMode(dirPin1, OUTPUT);
pinMode(stpPin1, OUTPUT);
pinMode(dirPin2, OUTPUT);
pinMode(stpPin2, OUTPUT);
}

void loop() 
{
  // put your main code here, to run repeatedly:
  int horz=analogRead(A1);
  int vert=analogRead(A0);
  Serial.print("HORIZ: ");
  Serial.print(horz);
  Serial.print(", VERT: ");
  Serial.println(vert);


  if(horz>700)
  {
    stepper(dirPin1, stpPin1, false); 
  }

  if(horz<300)
  {
    stepper(dirPin1, stpPin1, true);   
  }

  if(vert>700)
  {
    stepper(dirPin2, stpPin2, false);
  }

  if(vert<300)
  {
    stepper(dirPin2, stpPin2, true);
  }  

  delay(100);
}

void stepper(int stpPin, int dirPin, bool dirVal)
{
  digitalWrite(dirPin, dirVal);
  digitalWrite(stpPin, HIGH);
  delayMicroseconds(50);
  digitalWrite(stpPin, LOW);
  delayMicroseconds(50); 
}