#include <Servo.h>

// Create Servo objects
Servo servo1;
Servo servo2;
Servo servo3;
Servo servo4;

// Define pin numbers
const int servoPin1 = 3;
const int servoPin2 = 5;
const int servoPin3 = 6;
const int servoPin4 = 9;

void setup() {
  // Attach each servo to its respective pin
  servo1.attach(servoPin1);
  servo2.attach(servoPin2);
  servo3.attach(servoPin3);
  servo4.attach(servoPin4);
}

void loop() {
  // Move servos to different angles
  for (int angle = 0; angle <= 180; angle += 180) {
    servo1.write(angle);
    servo2.write(angle);
    servo3.write(angle);
    servo4.write(angle);
    delay(1000); // Wait for half a second for servos to reach the position
  }
  
  // Move servos back to 0 degrees
  for (int angle = 180; angle >= 0; angle -= 180) {
    servo1.write(angle);
    servo2.write(angle);
    servo3.write(angle);
    servo4.write(angle);
    delay(1000); // Wait for half a second for servos to reach the position
  }
}