#include <Servo.h>

Servo servo1; 
Servo servo2; 

int buttonState0 = 0;
int buttonState1 = 0;
int buttonState2 = 0;
int buttonState3 = 0;
int buttonPin0 = A0;
int buttonPin1 = A1;
int buttonPin2 = A2;
int buttonPin3 = A3; 

void setup() {
  servo1.attach(9);
  servo2.attach(10);
  pinMode(buttonPin0, INPUT_PULLUP);
  pinMode(buttonPin1, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);
}

void loop() {
  buttonState0 = digitalRead(buttonPin0);
  buttonState1 = digitalRead(buttonPin1);
  buttonState2 = digitalRead(buttonPin2);
  buttonState3 = digitalRead(buttonPin3);

  if (buttonState0 == LOW) { //forward
    servo1.write(180);
    servo2.write(0);
  } else if (buttonState1 == LOW) { //left
    servo1.write(90);
    servo2.write(0);
  } else if (buttonState2 == LOW) { //right
    servo1.write(180);
    servo2.write(90);
  } else if (buttonState3 == LOW) { //reverse
    servo1.write(0);
    servo2.write(180);
  } else { //stop
    servo1.write(90);
    servo2.write(90);
  }
}