Simple test¶
Ensure your device works with this simple test.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | import time
import board
import busio
import digitalio
import adafruit_74hc595
spi = busio.SPI(board.SCK, MOSI=board.MOSI)
latch_pin = digitalio.DigitalInOut(board.D5)
sr = adafruit_74hc595.ShiftRegister74HC595(spi, latch_pin)
pin1 = sr.get_pin(1)
while True:
pin1.value = True
time.sleep(1)
pin1.value = False
time.sleep(1)
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