/******************************************************

An open-source binary clock for Arduino.
Customized by XSaitoKungX
Web: https://tesseract.vip

Created at: 03-05-2023
Last changed: 10-05-2023

******************************************************/

void setup() {
  // put your setup code here, to run once:
  DDRD = B1111100;
  DDRB = 000011;
}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 0; i < 256; i++) {
    PORTD = i << 2;
    PORTB = i >> 6;
    delay(100);
  }
}