#include <AccelStepper.h>
#include <Stepper.h>
AccelStepper stepper;
#define LED_PIN 2
#define LDR_PIN  A0
const byte PositionPot = A0;
const byte AccelerationPot = A0;

// LDR Characteristics
const float GAMMA = 0.7;
const float RL10 = 50;
const int stepsPerRevolution = 2000;

Stepper myStepper(stepsPerRevolution, 6, 5, 4, 3);


void setup() {
  pinMode(LDR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  stepper.setMaxSpeed(1000);
  stepper.setAcceleration(35);
}

void loop() {
  int analogValue = analogRead(LDR_PIN);
  float voltage = analogValue / 1024. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
    myStepper.setSpeed(60);
  // initialize the serial port:
  Serial.begin(9600);


  if (lux > 100) {    
    digitalWrite(LED_PIN, LOW); 
  } else {    
    digitalWrite(LED_PIN, HIGH);   // turn the LED on (HIGH is the voltage level)
     int analog_in = analogRead(PositionPot);
  /*stepper.setAcceleration(analogRead(AccelerationPot));
  stepper.moveTo(analog_in*199);
  stepper.run();*/
  myStepper.step(-stepsPerRevolution);
  delay(0);
     }
   }