/*
void setup() {
  Serial.begin(9600);
}

void loop() {
  if (Serial.available()) {
    int b = Serial.read();

    Serial.print("DEC: ");
    Serial.println(b, DEC);

    Serial.print("HEX: ");
    Serial.println(b, HEX);

    Serial.print("BIN: ");
    Serial.println(b, BIN);

    Serial.print("CHAR: ");
    Serial.println((char)b);

    Serial.println("-------------------");
  }
}

*/

//DELAYs / Millis
unsigned long previousTime = 0;
const long interval = 2000;

void setup() {
  Serial.begin(9600);
}

void loop() {
  unsigned long currentTime = millis();

  if (currentTime - previousTime >= interval) {
    previousTime = currentTime;
    Serial.println("2 seconds passed");
  }
}