//Pin connected to ST_CP of 74HC595
int latchPin = PB1;
//Pin connected to SH_CP of 74HC595
int clockPin = PB0;
////Pin connected to DS of 74HC595
int dataPin = PB2;

// delay between each number (in ms)
int delayTime = 1000;

void setup() {

  //set pins to output so you can control the shift register and setting button and pot pins to INPUT
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
 
  
}
void loop() {
  

  // for loop to count from 0 to 255
  for (int numberToDisplay = 0; numberToDisplay < 255; numberToDisplay++) {


    // set the latch pin to low so LEDs dont change during shift

    digitalWrite(latchPin, LOW);
    // shift out the bits:
    shiftOut(dataPin, clockPin, MSBFIRST, numberToDisplay);
    //take the latch pin high so the LEDs will light up:
    digitalWrite(latchPin, HIGH);
    //print the number to serial

    // pause before next value
    delay(delayTime);
  }

  // Announcement that count has finished and is now restarting

 
}