Rotary Encoder

#include <RotaryEncoder.h>
#define PIN_IN1 9
#define PIN_IN2 8
RotaryEncoder encoder(PIN_IN1, PIN_IN2, RotaryEncoder::LatchMode::TWO03);
void setup() {
  Serial.begin(9600);
}
void loop() {
  static int pos = 0;
  encoder.tick();
  int newPos = encoder.getPosition();
  if (pos != newPos) {
    Serial.print("pos:");
    Serial.print(newPos);
    Serial.print(" dir:");
    Serial.println((int)(encoder.getDirection()));
    pos = newPos;
  }
}