Line follower robot code and circuit

 #define LS 2      // left sensor

#define RS 3      // right sensor

#define LM1 4     // left motor

#define LM2 5     // left motor

#define RM1 6     // right motor

#define RM2 7     // right motor

void setup()

{

  pinMode(LS, INPUT);

  pinMode(RS, INPUT);

  pinMode(LM1, OUTPUT);

  pinMode(LM2, OUTPUT);

  pinMode(RM1, OUTPUT);

  pinMode(RM2, OUTPUT);

}

void loop()

{

  if(digitalRead(LS) && digitalRead(RS))    /
/ Move Forward

  {

    digitalWrite(LM1, HIGH);

    digitalWrite(LM2, LOW);

    digitalWrite(RM1, HIGH);

    digitalWrite(RM2, LOW);

  }

  if(!(digitalRead(LS)) && digitalRead(RS))   // Turn right

  {

    digitalWrite(LM1, HIGH);

    digitalWrite(LM2, LOW);

    digitalWrite(RM1, LOW);

    digitalWrite(RM2, LOW);

  }

  if(digitalRead(LS) && !(digitalRead(RS)))   // turn left

  {

    digitalWrite(LM1, LOW);

    digitalWrite(LM2, LOW);

    digitalWrite(RM1, HIGH);

    digitalWrite(RM2, LOW);

  }

  if(!(digitalRead(LS)) && !(digitalRead(RS)))   // stop

  {

    digitalWrite(LM1, LOW);

    digitalWrite(LM2, LOW);

    digitalWrite(RM1, LOW);

    digitalWrite(RM2, LOW);

  }

}