// Code written with the wonderful help of MRMS - WORKSHOP
// "How DC GEAT MOTOR Works with ARDUINO and L298N"
// Created March 2020
// https://www.youtube.com/watch?v=GPVC84D5ULw



int motorPin = 6;
int resistorPin = A0;
int lightVal = 125;
//L298N MOTORDRIVER
//direction control:
int IN1 = 2; 
int IN2 = 4;


void setup() {
  pinMode(motorPin, OUTPUT);
  pinMode(resistorPin, INPUT);
  pinMode(IN1, OUTPUT); //clockwise
  pinMode(IN2, OUTPUT); //counterclockwise

  
  Serial.begin(9600);

}

void loop() {
  int resistorValue = analogRead(resistorPin);
  Serial.println(resistorValue);
 
  if (resistorValue > lightVal) {
    delay(2000);
    digitalWrite(IN1, HIGH); //motor spins clockwise
    digitalWrite(IN2, LOW);
    delay(1000);
    digitalWrite(IN1, LOW); //motor stops for 2 seconds
    digitalWrite(IN2, LOW);
    delay(2000);
    digitalWrite(IN1, LOW); //motor spins counter clockwise to create slack
    digitalWrite(IN2, HIGH);
    delay(750);
  }
  else {
   digitalWrite(IN1, LOW); 
   digitalWrite(IN2, LOW); // motor doesnt spin

  }
  
//for motor to spin counter clockwise
//digitalWrite(IN1, LOW); 
//digitalWrite(IN2, HIGH);

}