// https://www.youtube.com/watch?v=n3qmQHzcgto&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=42

#include <Arduino.h>

int latchPin = 11;
int clockPin = 9;
int dataPin = 12;

int dt = 2500;
byte LED1s = 0b10101010;
byte LED2s = 0b01010101;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, LED1s);
  digitalWrite(latchPin, HIGH);
  delay(dt);

  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, LED2s);
  digitalWrite(latchPin, HIGH);
  delay(dt);
}