diff --git a/ShiftRegLeds/src/main.cpp b/ShiftRegLeds/src/main.cpp
index 62fa3b5..454ffd0 100644
--- a/ShiftRegLeds/src/main.cpp
+++ b/ShiftRegLeds/src/main.cpp
@@ -1,10 +1,33 @@
+// https://www.youtube.com/watch?v=-WDO4mi2I68&list=PLGs0VKk2DiYw-L-RibttcvK-WBZm8WLEP&index=45
+
 #include <Arduino.h>
 
+int latchPin = 11;
+int clockPin = 9;
+int dataPin = 12;
+
+int dt = 100;
+byte ledByte = 0b11111110;
+
+
 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, ledByte);
+  digitalWrite(latchPin, HIGH);
+
+  Serial.println(ledByte, BIN);
+  delay(dt);
+
+  ledByte = ledByte * 128 + ledByte / 2; // Shift right
+  // ledByte = ledByte / 128 + ledByte * 2; // Shift left
 }