Documentation Status Discord Build Status Code Style: Black

CircuitPython driver for 74HC595 shift register.


This driver depends on:

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:

pip3 install adafruit-circuitpython-74hc595

To install system-wide (this may be required in some cases):

sudo pip3 install adafruit-circuitpython-74hc595

To install in a virtual environment in your current project:

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-74hc595

Usage Example

import board
import adafruit_74hc595
import busio
import digitalio
import time

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
    pin1.value = False


API documentation for this library can be found on Read the Docs.

For information on building library documentation, please check out this guide.


Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

Table of Contents


Indices and tables