kode program sederhana robot line follower

// Pin definiton for motor driver
const int motorLeftForward = 3;
const int motorLeftBackward = 5;
const int motorRightForward = 6;
const int motorRightBackward = 9;

// -------------------------------------------
// kode program sederhana robot line follower
// www.ardukode.blogspot.com
// -------------------------------------------

// Pin definition for line sensor
const int sensorLeft = A0;
const int sensorRight = A1;

void setup() {
  // Set motor driver pins as output
  pinMode(motorLeftForward, OUTPUT);
  pinMode(motorLeftBackward, OUTPUT);
  pinMode(motorRightForward, OUTPUT);
  pinMode(motorRightBackward, OUTPUT);

  // Set sensor pins as input
  pinMode(sensorLeft, INPUT);
  pinMode(sensorRight, INPUT);

  // Start serial communication for debugging
  Serial.begin(9600);
}

void loop() {
  // Read sensor values
  int leftSensorValue = analogRead(sensorLeft);
  int rightSensorValue = analogRead(sensorRight);

  // Debugging: print sensor values
  Serial.print("Left Sensor: ");
  Serial.print(leftSensorValue);
  Serial.print(" - Right Sensor: ");
  Serial.println(rightSensorValue);

  // Line following logic
  if (leftSensorValue > 500 && rightSensorValue < 500) {
    // Turn right
    moveRight();
  } else if (rightSensorValue > 500 && leftSensorValue < 500) {
    // Turn left
    moveLeft();
  } else if (leftSensorValue < 500 && rightSensorValue < 500) {
    // Move forward
    moveForward();
  } else {
    // Stop
    stopMoving();
  }
}

void moveForward() {
  digitalWrite(motorLeftForward, HIGH);
  digitalWrite(motorLeftBackward, LOW);
  digitalWrite(motorRightForward, HIGH);
  digitalWrite(motorRightBackward, LOW);
}

void moveLeft() {
  digitalWrite(motorLeftForward, LOW);
  digitalWrite(motorLeftBackward, LOW);
  digitalWrite(motorRightForward, HIGH);
  digitalWrite(motorRightBackward, LOW);
}

void moveRight() {
  digitalWrite(motorLeftForward, HIGH);
  digitalWrite(motorLeftBackward, LOW);
  digitalWrite(motorRightForward, LOW);
  digitalWrite(motorRightBackward, LOW);
}

void stopMoving() {
  digitalWrite(motorLeftForward, LOW);
  digitalWrite(motorLeftBackward, LOW);
  digitalWrite(motorRightForward, LOW);
  digitalWrite(motorRightBackward, LOW);
}