# Imports
from machine import Pin
import utime

# pins
pin_data = Pin(20, Pin.IN, Pin.PULL_DOWN)   # Q7 / Br
pin_clock = Pin(19, Pin.OUT)                # CP / Ye
pin_latch = Pin(18, Pin.OUT)                # PL / Bl

while True:
    data = 0
    # put latch down to start data sending
    pin_latch.value(1)

    # load in the data
    for _ in range(8):
        data = (data << 1) | pin_data.value()
        pin_clock.value(1)
        pin_clock.value(0)

    # Reset Latch Pin
    pin_latch.value(0)
    
    print("Shift register data:", bin(data))
    utime.sleep(1)