int CLK=2;
int DT =3;

void setup() {
  Serial.begin(115200);
  pinMode(CLK, INPUT);
  pinMode(DT, INPUT);
}

int last = HIGH;

void loop() {
  int clkValue = digitalRead(CLK);
  if (clkValue != last) {
    // There was a change on the CLK pin
    last = clkValue;

    int dtValue = digitalRead(DT);
    if (clkValue == LOW && dtValue == HIGH) {
      Serial.println("Rotated clockwise ⏩");
    }
    if (clkValue == LOW && dtValue == LOW) {
      Serial.println("Rotated counterclockwise ⏪");
    }
  }
}