/*
  74HC595 Shift Register Demonstration 1
  74hc595-demo.ino
  Count in Binary and display on 8 LEDs
 
  Modified from "Hello World" example by Carlyn Maw,Tom Igoe and David A. Mellis
 
  DroneBot Workshop 2020
  https://dronebotworkshop.com
*/
 
// Define Connections to 74HC595
 
// ST_CP pin 12
const int latchPin = 10;
// SH_CP pin 11
const int clockPin = 11;
// DS pin 14
const int dataPin = 12;
 
void setup ()
{
  // Setup pins as Outputs
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
}
 
void loop() {
  // Count from 0 to 255 and display in binary
 
  for (int numberToDisplay = 0; numberToDisplay < 256; numberToDisplay++) {
 
    // ST_CP LOW to keep LEDs from changing while reading serial data
    digitalWrite(latchPin, LOW);
 
    // Shift out the bits
    shiftOut(dataPin, clockPin, MSBFIRST, numberToDisplay);
 
    // ST_CP HIGH change LEDs
    digitalWrite(latchPin, HIGH);
    digitalWrite(latchPin, LOW);

    shiftOut(dataPin, clockPin, MSBFIRST, 45);
 
    delay(500);
    //digitalWrite(latchPin, HIGH);
    delay(500);
  }
}