#include <Servo.h>

// Pins:
// Servo pin: 9
// Potentiometer pin: A0

// mxengineer Specs:
// Arduino board, Servo motor (0-120 degrees), Linear potentiometer

// Social Networks:
// Instagram: @mxengineer
// Telegram: t.me/mxengineer
// YouTube: /mxengineer

Servo mouthServo;
const int servoPin = 9;
const int potPin = A0;

void setup() {
  mouthServo.attach(servoPin);
  mouthServo.write(0);
  delay(1000);
  mouthServo.write(120);
  delay(1000);
  mouthServo.write(0);
  delay(500);
}

void loop() {
  int potValue = analogRead(potPin);
  int angle = map(potValue, 0, 1023, 0, 120);
  angle = constrain(angle, 0, 120);
  mouthServo.write(angle);
  delay(15);
}