#include <Servo.h>

Servo s1;

void setup() {

  s1.attach(9);
  
  
  pinMode(2, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);
  pinMode(7, INPUT_PULLUP);

  s1.write(90);
}

void loop() {

  if (digitalRead(2) == LOW) { // Tombol 1
    s1.write(50); 
    delay(200); 
  }
  
  else if (digitalRead(4) == LOW) { // Tombol 2
    s1.write(100); 
    delay(200); // Anti-bouncing
  }
  
  else if (digitalRead(7) == LOW) { // Tombol 3
    s1.write(165); 
    delay(200); 
  }

  else {
    s1.write(90);
    delay(200);
  }
}