/* 74HC595 — kontrol 8 LED via 3 pin Arduino */ int latchPin = 8;    // STCP (RCLK)int clockPin = 12;   // SHCP (SRCLK)int dataPin  = 11;   // DS   (SER) // Wiring LED (common cathode)://   Anoda  → Q0..Q7 (via resistor 220Ω)//   Katoda → GND rail void setup() {  pinMode(latchPin, OUTPUT);  pinMode(clockPin, OUTPUT);  pinMode(dataPin,  OUTPUT);} void loop() {  for (int i = 0; i < 256; i++) {    digitalWrite(latchPin, LOW);    shiftOut(dataPin, clockPin, MSBFIRST, i);    digitalWrite(latchPin, HIGH);    delay(100);  }}