#include <Arduino.h>

/*
 Controlling a servo position using a potentiometer (variable resistor)  by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>
 modified on 8 Nov 2013  by Scott Fitzgerald  http://www.arduino.cc/en/Tutorial/Knob
 modified for ATtiny85 and Visual Studio Code - 17 December 2019  by Jeremy S. Cook https://twitter.com/JeremySCook
*/
#include <Servo.h>

Servo myservo;  // create servo object to control a servo

int potpin = A1;  // analog pin used to connect the potentiometer
int val;    // variable to read the value from the analog pin

void setup() {
  myservo.attach(0);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)
  myservo.write(val);                  // sets the servo position according to the scaled value
  delay(15);                           // waits for the servo to get there
}