// Pin connections
const int motorPin1 = 2;    // Control pin 1 of the L293D motor driver (IN1)
const int motorPin2 = 3;    // Control pin 2 of the L293D motor driver (IN2)
const int motorPin3 = 4;    // Control pin 3 of the L293D motor driver (IN3)
const int motorPin4 = 5;    // Control pin 4 of the L293D motor driver (IN4)
const int lightSensorPin = A0;  // Analog input pin for the light sensor

// Constants
const int threshold = 500; // Light intensity threshold for triggering movement

// Variables
int lightIntensity = 0;    // Variable to store the light intensity reading

void setup() {
  pinMode(motorPin1, OUTPUT);
  pinMode(motorPin2, OUTPUT);
  pinMode(motorPin3, OUTPUT);
  pinMode(motorPin4, OUTPUT);
  pinMode(lightSensorPin, INPUT);
}

void loop() {
  lightIntensity = analogRead(lightSensorPin); // Read the light intensity

  if (lightIntensity > threshold) {
    // Move the solar panel in one direction
    digitalWrite(motorPin1, HIGH);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, HIGH);
    digitalWrite(motorPin4, LOW);
  } else {
    // Move the solar panel in the opposite direction
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, HIGH);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, HIGH);
  }
}