// https://forum.arduino.cc/t/problems-with-the-code-to-use-a-uno-to-control-a-servo-using-a-potentiometer/1409809

#include <Servo.h>
Servo myservo;  // create servo object to control a servo
int potpin = A0;  // analog pin used to connect the potentiometer
int val;          // variable to read the value from the analog pin

void setup() {
  myservo.write(90); // Initialize the servo to the center position
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
  delay(15); // Small delay to ensure the servo reaches the center position
}

void loop() {
  val = analogRead(potpin); // reads the value from the sensor
  
  // Map the potentiometer value (0-1023) to a specific angle range.
  // Example: 90 degrees is center. To move 30 degrees each way,
  // we map the input from 0-1023 to a range from 60 to 120.
  int degree = map(val, 0, 1023, 60, 120); 
  
  myservo.write(degree);  // sets the servo position
  delay(15); // Small delay to make the servo movement smoother5
}