#include <Servo.h>

Servo myservo;  // create servo object to control a servo
int potPin = A0;  // analog pin used to connect the potentiometer

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

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

{
  "version": 1,
  "author": "robo_AI",
  "editor": "wokwi",
  "parts": [
    {
      "id": "uno",
      "type": "wokwi-arduino-uno",
      "top": 100,
      "left": 20
    },
    {
      "id": "potentiometer",
      "type": "wokwi-potentiometer",
      "top": 100,
      "left": 400,
      "rotate": 90
    },
    {
      "id": "servo",
      "type": "wokwi-servo",
      "left": 400,
      "top": 200,
      "attrs": { "hornColor": "black" },
      "rotate": 0
    }
  ],
  "connections": [
    ["uno:9", "servo:PWM", "orange", ["v-20", "*", "h0", "h-52"]],
    ["uno:5V", "servo:V+", "red", ["v20", "h0", "*", "h-20"]],
    ["uno:GND.1", "servo:GND", "black", ["v-28","h0", "*", "h-35"]],
    ["uno:GND.1", "potentiometer:GND", "black", ["v-28","h0", "*", "h-44"]],
    ["uno:5V", "potentiometer:VCC", "red", ["v20", "h0", "*", "h-30"]],
    ["uno:A0", "potentiometer:SIG", "green", ["v16","h20", "*", "h-90"]]
  ]
}