#include <Servo.h> 

#define POT_PIN 2 
#define SRV_PIN 4 

int potValue = 0; 
int srvValue = 0; 

Servo myservo; 

void setup() { 
  pinMode(POT_PIN, INPUT); 
  pinMode(SRV_PIN, OUTPUT); 
  Serial.begin(115200); 
  myservo.attach(SRV_PIN); 
  myservo.write(0); 
} 

void loop() { 
  // range potValue = 0-4095 (12 bit) 
  // range servo = 0-180 (degree) 
  potValue = analogRead(POT_PIN); 
  srvValue = map(potValue, 0, 4095, 0, 180); 
  myservo.write(srvValue); 
  Serial.print("Sudut servo = "); 
  Serial.print(srvValue); 
  Serial.println(" derajat"); 
  delay(100); 
}